For Mane Six/Stand Users, I opted to use their G1 counterparts for the stand colors (in this case, Sparkler as Crazy Diamond).
As for Dissonanzo on the right, I was going to add a recolored King Crimson, but he proved too difficult to modify.
snort
EDIT: Forgot to clarify; Josuke’s clothes are based off Rarity’s gala dress…