Idol Showdown: Unlockable Color Palettes Guide (Cosplay)

Cosplay 4 is unlocked by completing Virtual Frontier with that character.
Cosplay 5 is unlocked by playing online or offline versus with that character.
Cosplay 6 is unlocked by completing Arcade mode with that character.

In general, Cosplay 6 is a reference to another fighting game, such as King of Fighters, Street Fighter, or Guilty Gear.

This guide is a work in progress, if you have any or all 3 palettes for a given idol unlocked, please post them and I will add them to the guide.

Cosplay 4: Original Sora.
Cosplay 5: Tsukino Mito (Nijisanji).
Cosplay 6: Athena from KoF.

Cosplay 4: Alt outfit.
Cosplay 5: Sonic.
Cosplay 6: M. Bison from SF.

Cosplay 4: Alt outfit.
Cosplay 5: Aragami Oga (Holostars).
Cosplay 6: Ky from GG.

Cosplay 4: Alt outfit.
Cosplay 5: Inui Toko (Nijisanji).
Cosplay 6: Eltnam from TYPE-MOON.

Cosplay 4: Mel.
Cosplay 5: Alt outfit.
Cosplay 6: Morrigan from Darkstalkers.

Cosplay 4: Aqua.
Cosplay 5: Shion.
Cosplay 6: Baiken from GG.

Cosplay 4: Aloe.
Cosplay 5: Dante from DMC.
Cosplay 6: Noel from BlazBlue.

Cosplay 4: Coco Kaine.
Cosplay 5: Melody (VShojo).
Cosplay 6: Potemkin from GG.