I had the idea to make edits of swapping the body colours of characters that have the same colour, but a different shade.

So here's the first one: Rarity and Celestia! Rarity doesn't really look that bad with Celestia's coat colour, but Celestia definitely looks off. (It also made me realize how relatively dark white, aka light grey, Rarity appears)

The other ideas I have so far are swapping Trixie and Rainbow Dash's blues, Pinkie and Cadence's pinks, and Twilight and Starlight's purples (Which is definitely gonna be the most jarring change since Starlight is a lot lighter purple, bordering on pink)

I'd love to hear some other ideas!