In Scooby Doo 2, Scooby seems surprised when told that purple boots and an orange sweater don't go together. This is because Scooby (Who is a dog) is colour blind : r/MovieDetails
Scooby Doo 2002 Daphne Blake 2 by PrincessAmulet16 on DeviantArt
The Purple Store - Purple boots for your Scooby Doo Daphne costume for Halloween! Other amazing purple costume ideas? We're running out of these REALLY quickly. For what costume would you wear
All the iconic outfits worn by Daphne in Scooby Doo, ranked
A Pup Named Scooby-Doo - Daphne's Go-Go Boots - YouTube