For the clothes you are currently wearing, the dye is not available because it is not displayed in the appearance decoration.
It’s such an absurd bug (?) and I can’t believe the developer didn’t notice it.
Please fix the clothes and weapons you are wearing to be displayed in the appearance compartment.
And I want you to organize the armor and costumes so that they can be distinguished from each other.
The costumes are so mixed up that it’s hard to see and confusing.