I actually don't mind pink and purple~. I find that it's hard to imagine some toys without those colors, ha ha.
Although, there are some shades of pink that are quite obnoxious or just plain icky.
I love all colors, but if I had to go with an overall color scheme, I love rare colors and wish they were employed more often, which are very rich and muted shades, for the most part. Very similar to Raven's list actually! So lots of sophisticated colors like hunter's green, dark red, dark muted blues, turquoise, wine, etc etc. I find those colors to be so classy. That and soft colors like fair tan, peach, pale pink, cream, lavender, pale blue, etc are very gentle too. That and sometimes you just want something fiery like scarlet.
Although, for me, it's normally the design of the toy itself that lends me to liking a certain color combination they offer. For example, for the Zini Ran, I love the black and velvety wine color combination, while the Zini Zook or Hua, I think the green and pink look quite striking since their designs are so springy and full of life. So, it all depends.
Although, I think black and silver typically are classy winners that would look great on virtually all toys and should be an offering to any regardless.