Tough one! I definitely find it subjective. I may name colours I like least, but in the right setting, right bedroom, right artist, etc, can make it look amazing!

Maybe basing it off my wardrobe would be better. So! I rarely wear:
- Yellow
- Neon colour schemes
- White (I actually like white but very rarely pick it because I am a clumsy mess and that is habit lol Great in art!)

Combination, hmmm....Again, it can look right in the correct setting. I think Christmas red and green is my list favourite, but a darker tone on both with natural elements make it feel very cozy <3 (like red plaid cabin with evergreen!)