Dexter's Laboratory/Powerpuff Girls, Bubbles/Dee Dee, pink.
When Bubbles flushes her cheeks turn into Dee Dee's favorite color. She can't resist and brushes her lips and fingers across the pink hue. She doesn't feel it's wrong, Dee Dee has no concept of what's right and wrong to touch. If something catches her eye she has to lay her fingers on it. Bubbles squeals under her curious fingers. They both are speechless as the Powerpuff's dress is pulled off.
“Your nipples are pink too! How cute!” Dee Dee giggles and pokes. She can't help it, they look like tantalizing buttons and Bubble's kitten like mews only encourage Dee Dee to press those “buttons” over and over and over again-
-until she finds a new object of curiosity, swelling between Bubble's dainty legs.