diff --git a/Cargo.lock b/Cargo.lock
index 2611521..4c8bac8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -143,7 +143,7 @@ checksum = "644dd749086bf3771a2fbc5f256fdb982d53f011c7d5d560304eafeecebce79d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
 
 [[package]]
@@ -321,7 +321,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
 
 [[package]]
@@ -346,6 +346,15 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
+[[package]]
+name = "colored"
+version = "3.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fde0e0ec90c9dfb3b4b1a0891a7dcd0e2bffde2f7efed5fe7c9bb00e5bfb915e"
+dependencies = [
+ "windows-sys 0.59.0",
+]
+
 [[package]]
 name = "compact_str"
 version = "0.8.1"
@@ -457,7 +466,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "strsim",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
 
 [[package]]
@@ -468,7 +477,7 @@ checksum = "d336a2a514f6ccccaa3e09b02d41d35330c07ddf03a62165fcec10bb561c7806"
 dependencies = [
  "darling_core",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
 
 [[package]]
@@ -500,7 +509,7 @@ dependencies = [
  "darling",
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
 
 [[package]]
@@ -577,7 +586,7 @@ checksum = "97369cbbc041bc366949bc74d34658d6cda5621039731c6310521892a3a20ae0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
 
 [[package]]
@@ -733,7 +742,7 @@ checksum = "162ee34ebcb7c64a8abebc059ce0fee27c2262618d7b60ed8faf72fef13c3650"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
 
 [[package]]
@@ -1122,7 +1131,7 @@ checksum = "1ec89e9337638ecdc08744df490b221a7399bf8d164eb52a665454e60e075ad6"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
 
 [[package]]
@@ -1191,7 +1200,7 @@ dependencies = [
  "indoc",
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
 
 [[package]]
@@ -1215,6 +1224,15 @@ dependencies = [
  "either",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b192c782037fadd9cfa75548310488aabdbf3d2da73885b31bd0abd03351285"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.14"
@@ -1340,7 +1358,7 @@ dependencies = [
  "chrono",
  "clap",
  "clap_complete",
- "colored",
+ "colored 3.0.0",
  "confy",
  "crossterm",
  "ctrlc",
@@ -1351,7 +1369,7 @@ dependencies = [
  "human-panic",
  "indicatif",
  "indoc",
- "itertools",
+ "itertools 0.14.0",
  "log",
  "log4rs",
  "managarr-tree-widget",
@@ -1373,6 +1391,7 @@ dependencies = [
  "tokio",
  "tokio-util",
  "urlencoding",
+ "validate_theme_derive",
  "veil",
 ]
 
@@ -1442,7 +1461,7 @@ dependencies = [
  "cfg-if",
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
 
 [[package]]
@@ -1453,7 +1472,7 @@ checksum = "652cd6d169a36eaf9d1e6bce1a221130439a966d7f27858af66a33a66e9c4ee2"
 dependencies = [
  "assert-json-diff",
  "bytes",
- "colored",
+ "colored 2.2.0",
  "futures-util",
  "http",
  "http-body",
@@ -1566,7 +1585,7 @@ checksum = "a948666b637a0f465e8564c73e89d4dde00d72d4d473cc972f390fc3dcee7d9c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
 
 [[package]]
@@ -1754,9 +1773,9 @@ dependencies = [
 
 [[package]]
 name = "quote"
-version = "1.0.38"
+version = "1.0.39"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e4dccaaaf89514f546c693ddc140f729f958c247918a13380cccc6078391acc"
+checksum = "c1f1914ce909e1658d9907913b4b91947430c7d9be598b15a1912935b8c04801"
 dependencies = [
  "proc-macro2",
 ]
@@ -1803,7 +1822,7 @@ dependencies = [
  "crossterm",
  "indoc",
  "instability",
- "itertools",
+ "itertools 0.13.0",
  "lru",
  "paste",
  "strum",
@@ -1928,21 +1947,21 @@ dependencies = [
 
 [[package]]
 name = "rstest"
-version = "0.23.0"
+version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a2c585be59b6b5dd66a9d2084aa1d8bd52fbdb806eafdeffb52791147862035"
+checksum = "6fc39292f8613e913f7df8fa892b8944ceb47c247b78e1b1ae2f09e019be789d"
 dependencies = [
- "futures",
  "futures-timer",
+ "futures-util",
  "rstest_macros",
  "rustc_version",
 ]
 
 [[package]]
 name = "rstest_macros"
-version = "0.23.0"
+version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "825ea780781b15345a146be27eaefb05085e337e869bff01b4306a4fd4a9ad5a"
+checksum = "1f168d99749d307be9de54d23fd226628d99768225ef08f6ffb52e0182a27746"
 dependencies = [
  "cfg-if",
  "glob",
@@ -1952,7 +1971,7 @@ dependencies = [
  "regex",
  "relative-path",
  "rustc_version",
- "syn 2.0.98",
+ "syn 2.0.99",
  "unicode-ident",
 ]
 
@@ -2121,7 +2140,7 @@ checksum = "f09503e191f4e797cb8aac08e9a4a4695c5edf6a2e70e376d961ddd5c969f82b"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
 
 [[package]]
@@ -2192,7 +2211,7 @@ checksum = "5d69265a08751de7844521fd15003ae0a888e035773ba05695c5c759a6f89eef"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
 
 [[package]]
@@ -2299,7 +2318,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "rustversion",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
 
 [[package]]
@@ -2321,9 +2340,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.98"
+version = "2.0.99"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "36147f1a48ae0ec2b5b3bc5b537d267457555a10dc06f3dbc8cb11ba3006d3b1"
+checksum = "e02e925281e18ffd9d640e234264753c43edc62d64b2d4cf898f1bc5e75f3fc2"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2347,7 +2366,7 @@ checksum = "c8af7666ab7b6390ab78131fb5b0fce11d6b7a6951602017c35fa82800708971"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
 
 [[package]]
@@ -2418,7 +2437,7 @@ checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
 
 [[package]]
@@ -2488,7 +2507,7 @@ checksum = "6e06d43f1345a3bcd39f6a56dbb7dcab2ba47e68e8ac134855e7e2bdbaf8cab8"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
 
 [[package]]
@@ -2637,7 +2656,7 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b3644627a5af5fa321c95b9b235a72fd24cd29c648c2c379431e6628655627bf"
 dependencies = [
- "itertools",
+ "itertools 0.13.0",
  "unicode-segmentation",
  "unicode-width 0.1.14",
 ]
@@ -2719,6 +2738,14 @@ dependencies = [
  "getrandom 0.3.1",
 ]
 
+[[package]]
+name = "validate_theme_derive"
+version = "0.1.0"
+dependencies = [
+ "quote",
+ "syn 2.0.99",
+]
+
 [[package]]
 name = "vcpkg"
 version = "0.2.15"
@@ -2743,7 +2770,7 @@ checksum = "5b2d5567b6fbd34e8f0488d56b648e67c0d999535f4af2060d14f9074b43e833"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
 
 [[package]]
@@ -2801,7 +2828,7 @@ dependencies = [
  "log",
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
  "wasm-bindgen-shared",
 ]
 
@@ -2836,7 +2863,7 @@ checksum = "8ae87ea40c9f689fc23f209965b6fb8a99ad69aeeb0231408be24920604395de"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -3141,7 +3168,7 @@ checksum = "2380878cad4ac9aac1e2435f3eb4020e8374b5f13c296cb75b4620ff8e229154"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
  "synstructure",
 ]
 
@@ -3163,7 +3190,7 @@ checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
 
 [[package]]
@@ -3183,7 +3210,7 @@ checksum = "d71e5d6e06ab090c67b5e44993ec16b72dcbaabc526db883a360057678b48502"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
  "synstructure",
 ]
 
@@ -3212,5 +3239,5 @@ checksum = "6eafa6dfb17584ea3e2bd6e76e0cc15ad7af12b09abdd1ca55961bed9b1063c6"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.98",
+ "syn 2.0.99",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 06a0153..a2ca6e7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,6 +13,9 @@ license = "MIT"
 rust-version = "1.82.0"
 exclude = [".github", "CONTRIBUTING.md", "*.log", "tags"]
 
+[workspace]
+members = ["proc_macros/validate_theme_derive"]
+
 [dependencies]
 anyhow = "1.0.68"
 backtrace = "0.3.74"
@@ -41,11 +44,16 @@ ratatui = { version = "0.29.0", features = [
   "unstable-widget-ref",
 ] }
 urlencoding = "2.1.2"
-clap = { version = "4.5.20", features = ["derive", "cargo", "env", "wrap_help"] }
+clap = { version = "4.5.20", features = [
+  "derive",
+  "cargo",
+  "env",
+  "wrap_help",
+] }
 clap_complete = "4.5.33"
-itertools = "0.13.0"
+itertools = "0.14.0"
 ctrlc = "3.4.5"
-colored = "2.1.0"
+colored = "3.0.0"
 async-trait = "0.1.83"
 dirs-next = "2.0.0"
 managarr-tree-widget = "0.24.0"
@@ -55,13 +63,14 @@ deunicode = "1.6.0"
 paste = "1.0.15"
 openssl = { version = "0.10.70", features = ["vendored"] }
 veil = "0.2.0"
+validate_theme_derive = { path = "proc_macros/validate_theme_derive" }
 
 [dev-dependencies]
 assert_cmd = "2.0.16"
 mockall = "0.13.0"
 mockito = "1.0.0"
 pretty_assertions = "1.3.0"
-rstest = "0.23.0"
+rstest = "0.25.0"
 serial_test = "3.2.0"
 
 [dev-dependencies.cargo-husky]
diff --git a/proc_macros/validate_theme_derive/Cargo.toml b/proc_macros/validate_theme_derive/Cargo.toml
new file mode 100644
index 0000000..8c55170
--- /dev/null
+++ b/proc_macros/validate_theme_derive/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+name = "validate_theme_derive"
+version = "0.1.0"
+edition = "2024"
+
+[lib]
+proc-macro = true
+
+[dependencies]
+quote = "1.0.39"
+syn = "2.0.99"
diff --git a/proc_macros/validate_theme_derive/src/lib.rs b/proc_macros/validate_theme_derive/src/lib.rs
new file mode 100644
index 0000000..d82648b
--- /dev/null
+++ b/proc_macros/validate_theme_derive/src/lib.rs
@@ -0,0 +1,41 @@
+use proc_macro::TokenStream;
+use quote::quote;
+use syn::{parse_macro_input, Data, DeriveInput, Fields};
+
+#[proc_macro_derive(ValidateTheme, attributes(validate))]
+pub fn derive_validate_theme(input: TokenStream) -> TokenStream {
+	let input = parse_macro_input!(input as DeriveInput);
+	let struct_name = &input.ident;
+
+	let mut validation_checks = Vec::new();
+
+	if let Data::Struct(data_struct) = &input.data {
+		if let Fields::Named(fields) = &data_struct.fields {
+			for field in &fields.named {
+				let field_name = &field.ident;
+
+				let has_validate_attr = field.attrs.iter().any(|attr| {
+					attr.path().is_ident("validate")
+				});
+
+				if has_validate_attr {
+					validation_checks.push(quote! {
+						if self.#field_name.is_none() {
+							log::error!("{} is missing a color value.", stringify!(#field_name));
+								eprintln!("{} is missing a color value.", stringify!(#field_name));
+								process::exit(1);
+						}
+					})
+				}
+			}
+		}
+	}
+
+	quote! {
+		impl #struct_name {
+			pub fn validate(&self) {
+				#(#validation_checks)*
+			}
+		}
+	}.into()
+}
diff --git a/src/main.rs b/src/main.rs
index 2915522..0bbe5f2 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -222,6 +222,7 @@ async fn start_ui(
     Theme::default()
   };
   debug!("Managarr loaded using theme: {theme:?}");
+  theme.validate();
   THEME.set(theme);
 
   let mut stdout = io::stdout();
diff --git a/src/ui/theme.rs b/src/ui/theme.rs
index ad2ff5d..b8805e2 100644
--- a/src/ui/theme.rs
+++ b/src/ui/theme.rs
@@ -1,8 +1,10 @@
+use crate::process;
 use anyhow::Result;
 use derivative::Derivative;
 use ratatui::style::Color;
 use serde::{Deserialize, Serialize};
 use std::str::FromStr;
+use validate_theme_derive::ValidateTheme;
 
 #[cfg(test)]
 #[path = "theme_tests.rs"]
@@ -34,7 +36,7 @@ pub struct Style {
   pub color: Option<Color>,
 }
 
-#[derive(Debug, Deserialize, Serialize, Clone, Copy, Derivative)]
+#[derive(Debug, Deserialize, Serialize, Clone, Copy, Derivative, ValidateTheme)]
 #[derivative(Default)]
 #[cfg_attr(test, derive(PartialEq, Eq))]
 pub struct Theme {
@@ -43,51 +45,67 @@ pub struct Theme {
     value = "Some(Background { color: Some(Color::Rgb(35, 50, 55)), enabled: Some(true) })"
   ))]
   pub background: Option<Background>,
+  #[validate]
   #[serde(default = "default_awaiting_import_style")]
   #[derivative(Default(value = "Some(Style { color: Some(Color::Rgb(255, 170, 66)) })"))]
   pub awaiting_import: Option<Style>,
+  #[validate]
   #[serde(default = "default_indeterminate_style")]
   #[derivative(Default(value = "Some(Style { color: Some(Color::Rgb(255, 170, 66)) })"))]
   pub indeterminate: Option<Style>,
+  #[validate]
   #[serde(default = "default_default_style")]
   #[derivative(Default(value = "Some(Style { color: Some(Color::White) })"))]
   pub default: Option<Style>,
+  #[validate]
   #[serde(default = "default_downloaded_style")]
   #[derivative(Default(value = "Some(Style { color: Some(Color::Green) })"))]
   pub downloaded: Option<Style>,
+  #[validate]
   #[serde(default = "default_downloading_style")]
   #[derivative(Default(value = "Some(Style { color: Some(Color::Magenta) })"))]
   pub downloading: Option<Style>,
+  #[validate]
   #[serde(default = "default_failure_style")]
   #[derivative(Default(value = "Some(Style { color: Some(Color::Red) })"))]
   pub failure: Option<Style>,
+  #[validate]
   #[serde(default = "default_help_style")]
   #[derivative(Default(value = "Some(Style { color: Some(Color::LightBlue) })"))]
   pub help: Option<Style>,
+  #[validate]
   #[serde(default = "default_missing_style")]
   #[derivative(Default(value = "Some(Style { color: Some(Color::Red) })"))]
   pub missing: Option<Style>,
+  #[validate]
   #[serde(default = "default_primary_style")]
   #[derivative(Default(value = "Some(Style { color: Some(Color::Cyan) })"))]
   pub primary: Option<Style>,
+  #[validate]
   #[serde(default = "default_secondary_style")]
   #[derivative(Default(value = "Some(Style { color: Some(Color::Yellow) })"))]
   pub secondary: Option<Style>,
+  #[validate]
   #[serde(default = "default_success_style")]
   #[derivative(Default(value = "Some(Style { color: Some(Color::Green) })"))]
   pub success: Option<Style>,
+  #[validate]
   #[serde(default = "default_system_function_style")]
   #[derivative(Default(value = "Some(Style { color: Some(Color::Yellow) })"))]
   pub system_function: Option<Style>,
+  #[validate]
   #[serde(default = "default_unmonitored_style")]
   #[derivative(Default(value = "Some(Style { color: Some(Color::Gray) })"))]
   pub unmonitored: Option<Style>,
+  #[validate]
   #[serde(default = "default_unmonitored_missing_style")]
   #[derivative(Default(value = "Some(Style { color: Some(Color::Yellow) })"))]
   pub unmonitored_missing: Option<Style>,
+  #[validate]
   #[serde(default = "default_unreleased_style")]
   #[derivative(Default(value = "Some(Style { color: Some(Color::LightCyan) })"))]
   pub unreleased: Option<Style>,
+  #[validate]
   #[serde(default = "default_warning_style")]
   #[derivative(Default(value = "Some(Style { color: Some(Color::Magenta) })"))]
   pub warning: Option<Style>,