Solids or color block.
I like the ones with a contrasting inset at the sides of the waist.

I choose my colors for visibility. I would not wear dull green, black or brown. I only wear blue if it is bright or includes a hi-vis color block.
No colors that blend in with nature's background.

I prefer hot pinks. My strategy is that drivers will be extra careful if they know they are passing a female bicyclist. It gives me a sense of security. It may be a false one, but it works for me.

I also wear solid street clothes. Patterns are few and far between in my closet!