Take this game for instance https://ffxiv.eorzeacollection.com/glamours/loved all these you see here are individual armour pieces from ingame.
In guild wars 2 https://www.reddit.com/r/GuildWarsDyeJob/ https://gw2.mmo-fashion.com/ , the combination of the clothes of many pieces are very chaotic. Many of them need to use heavy colours, or glowing/Bloom effect to make it look good.
the fact that 'The Dreamer', 'The Moot' and 'Quip' exist as a legendary, says enough about the designer team.
I can only imagine the designer team brain storming session, keywords: disco ball, clown, confetti, rainbow, unicorn.
Its supposed to be a legendary, any other MMO would not mess up something like that.