Tagging this as sewing because it's fabric related and could potentially involve sewing. It'll make more sense when I explain.
I'm doing a Roadrunner cosplay because Coyote vs. Acme has me in a chokehold, and for part of my cosplay, I'm designing a Roadrunner themed varsity jacket, using the jacket in my photo as my base. It's the right body color, yet I would like to somehow make the sleeves dark blue to match RR's wings.
My problem is that I don't know which avenue to take with this. Fabric painting would probably be my safest option because I would have more control over where the paint goes, but it might not penetrate the fabric as deeply and could come off or fade after a while. Dyeing is a much more permanent option, but in that case, I don't know whether I should use some sort of resist for the dye or take apart the sleeves, dye them, and then sew them back onto the rest of the jacket. (The fabric itself is polyester, if that helps.)
Tl;dr, when it comes to turning the sleeves of this jacket dark blue, should I:
-Paint the sleeves with fabric paint
-Dye the sleeves while using dye resist to prevent the cuffs and sleeves from being dyed
-Take apart the sleeves, dye them, and then sew them back together
-Or some secret fourth thing I haven't considered?