I think I like all colours as long as they are the right tone.
I use to not like purple and green but my DD loves those colours made her a quilt and really liked how it turned out.
My faves our Thimbleberries and Kansas Troubles.

I really don't like to use earth tones, along with oranges and yellow greens. One exception to that is I love the fabric lines that mix chocolate brown with pinks or aqua/teal green.

I use a lot of blues - with some greens thrown in. Just finished a couple of blue with green and bits of dark red thrown in and love them. I enjoy the rich look.

Orange color & also novelty prints.

That cheddar color yuck

I don't use white. If a pattern calls for white, I use a nice light cream tone-on-tone instead.

Orange is tough to match with other colors.

I'm not a fan of browns or blues but I do have a bin of both colours as I have two blue loving daughters and my LQS just did their BOM with browns. I still don't like brown but need some quilt blocks to use for a QAYG so I guess they will get finished and donated.

Don't like working with black or very dark blue or purple. Not because I don't like the colors, but my eyes have trouble seeing the stitches as I have gotten older. I would have to work in a sun-filled room if I was to sew on any of them.

Haven't tended to use many beiges or WOW-will be starting to use them soon.