This is Peppermint, a kitten from a book that I had as a kid.  Her mom, Candy, had four kittens, Lollipop, Chocolate Drop, Caramel, and Peppermint.  Soon, all the kittens, but Peppermint, were sold to the children who came to Mr. Dobby's candy shop.  The runt of the litter, dirty gray, because she was shy and hid in all the dusty corners of Mr Dobby's candy shop, Peppermint felt unloved and unwanted.  Finally, after days of sadness at not being chosen, Peppermint was thrilled that a little girl named Barbara came and took her home.  Peppermint had a home and a family at last!  I loved this book.  And of course the surprise ending where Pepperimint is accidentally dyed a beautiful blue and wins first prize at the School Cat Show is a charming end to a sweet story.