To use Colour of Lumina in Clair Obscur: Expedition 33 , follow these steps:

• Progress through the story until you reach the Flying Waters area and defeat the Goblu boss there. This unlocks Maelle and The Curator NPCs who join your camp

• Once The Curator is available at your camp, talk to them and select the "Upgrade Expedition Resources" option

• From this menu, you can spend your collected Colours of Lumina to increase the Lumina Points of any party member. Each Colour of Lumina grants one Lumina Point to the chosen character

• Increasing Lumina Points unlocks new Lumina effects (special abilities or enhancements) for that character, allowing you to equip different Picto items and strengthen your party

You cannot use Colours of Lumina early in the game; they accumulate until you unlock The Curator and Maelle after the Flying Waters questline

. Colours of Lumina can be found by exploring, defeating enemies and bosses, or purchased from certain merchants like Noco in Flying Waters

. In summary, to use Colour of Lumina:

1. Unlock The Curator by progressing through the story (defeat Goblu boss in Flying Waters).
2. Visit The Curator at camp.
3. Choose "Upgrade Expedition Resources."
4. Allocate Colours of Lumina to party members to increase their Lumina Points and unlock new abilities.

This system helps customize and enhance your characters' capabilities as you advance in the game