Can I dye my gear? And is there a costume system?

[Vrahjin]

Unless the quest for the dye has changed, you might need Orange Juice (or something similar), which can easily be bough in the Coffer & Coffins (or such similar name) just southeast of Camp Blackbrush in Thanalan.

Did the quest a few years ago, so don't know if they changed it any. Even if they have, always good to have something to cool you off under that blazing Thanalan sun

[Niwashi]

The dye quest is called Color Your World, and you get it from Swyrgim in the Vesper Bay area of Western Thanalan. Makes it worth heading there as soon as the main scenario sends you to Ul'dah.

Unless the quest for the dye has changed, you might need Orange Juice (or something similar), which can easily be bough in the Coffer & Coffins (or such similar name) just southeast of Camp Blackbrush in Thanalan.

The Merchant & Mender right there in Vesper Bay has now taken to stocking orange juice as well, so you can pick some up locally near where you get the quest.

[Vrahjin]

The Merchant & Mender right there in Vesper Bay has now taken to stocking orange juice as well, so you can pick some up locally near where you get the quest.

Such kind Merchants, saving people the trouble of running around like headless chocobos in their quest for a fresh glass of Orange Juice.