What kinds of designs I like. I usually like neutral colors like brown, white, grey, or warm/cool grey for certain characters. It usually depends on the character I plan to create and how I want them to look. Sometimes, I'll go for cool colors for semi-realistic themes like a subtle green or navy blue. For both realistic and fantasy themes, I'll possibly go for a golden brown, pale yellows,or hints of orange. There is just so much variety with color.
As for general design, I like to keep it simple. Sometimes I'll have a complex design, but it's for characters that I've had a long time to think about. Overall, I often like stripes, spots, or patches of color in certain places. I just don't like for my character to have so much design that it seems to be distracting.