Just realized the accent colors on the shinies of the future paradox forms are the colors of the rainbow (Iron Jugulis being both indigo and violet and Iron Valiant - pink) :
Iron Valiant location: Where to catch Iron Valiant Pokemon Scarlet and Violet | VGC
Iron Valiant and shiny Iron Valiant - Imgflip
Shiny Iron Valiant Art : r/pokemon
PREORDER] 1/20 Scale World Figure [PKL] - Iron Valiant – POKÉ GALERIE
I CAUGHT SHINY IRON VALIANT!! | Pokémon Scarlet and Violet - YouTube