I'm pretty open minded. I try to find a focus fabric first and if I love that, I'll love the quilt. I then pick colors from the focus fabric.
I know I've made at least 500 quilts, probably way more, and I don't believe there are any colors I've avoided. One thing I notice, looking back, is that I have a strong tendancy to include both warm and cool colors in a quilt. I've made both high and low contrast quilts also.