There are certain colors I prefer more than others, but I rarely stop myself from buying a toy because I'm not a fan of the color options. However, if I'm torn between two products I want I'll always go with the one that has the best color.
I prefer certain colors over other colors. I tend to stick to blue or purple, and hate pink but sometimes that can't be avoided and I end up with a pink toy anyway. I like odd color toy options too like green, orange, etc.
Sometimes it doesn't matter at all, sometimes I'll pick a color just because I have nothing in that color yet and/or it's pretty, and sometimes I decide something really looks better in a certain color and hold out for it, but by sometimes I mean maybe twice ever. It's not that important to me.
I look to see what color appeals to me the best but the colors really don't matter to me, because I like all colors. If one jumps out at me I will buy it but usually I just pick something because I want it no matter what color it is.