I do this as well! It’s a normal thing that appears in some, though I forgot the term for it. My names all have colours, smells, sounds, etc.
Ripley; Red, smells of cinnamon, brisk and cold yet bright, sounds like an autumn breeze, looks like watercolour flowers. Also associate this with dirt bikes.
Sol; Yellow, smells of earth, warm and calm, sounds like storytelling, looks like the things I love most.
Peregrine; Blue, smells of heavy machinery, sharp and focused, sounds like aircraft engines, looks like rusted vintage planes.
Fenmore; Green, smells of botanical gardens, reserved yet peaceful, sounds like pine grouse calling, looks like dark green winter foliage.