Update captions tab to use new gray and blue color classes #4915

Job	Run time
Detect Changes	7s
Typecheck	1m 13s
Format (Biome)	11s
Lint (Biome)	13s
Format (Cargo)	12s
Clippy (x86_64-pc-windows-msvc, windows-latest)	5m 51s
Rust cache (x86_64-apple-darwin, macos-latest)	12m 51s
Clippy (aarch64-apple-darwin, macos-latest)	3m 7s
Rust cache (aarch64-apple-darwin, macos-latest)	5m 56s
Rust cache (x86_64-pc-windows-msvc, windows-latest)	6m 32s
Build Desktop	-1s
Verify Tauri plugin versions	-1s
	36m 11s

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