There is an excellent resource for skin (vinyl) tones of Integrity Toys dolls maintained by Mandy aka Amanda. The number of vinyl colors keeps growing so keep watching for updates.
Here is a sample image from the blog:
Skin Tone Database
- Sales: Furniture, Backdrops, Props, Miscellaneous
- Sales: Tonner and Wilde Imagination
- Sales: Magazines, Books, Patterns
- Sales: Kingdom Doll, Ficon, Other 16"
- Sales: Barbie; Monster High, Hasbro, Mikelman
- Sales: Gene Marshall; Madame Alexander; Mod British Birds
- Sales: Superdoll Sybarite
- Sales: Integrity Toys 12" - 16"
- Sales: Wigs