Painting a yellow KRK woofer

[TBTL]

Not sure about that Kevlar cone because it has a woven structure, unless varnished at factory or something, it will absorb some water.

Carbon fibre, glass fibre and aramid fibre cone materials are impregnated with a polymer.
Fibre-reinforced plastic - Wikipedia

 

[tuantran]

Painting a speaker cabinet is easier than painting a cone of a speaker driver.

 

[HDH]

Regarding dying and decolouring with solvents. The glass-aramid will likely be suspended in an epoxy so I think the only way to change the colour is to cover it up with a paint. Personally, since it's a woofer, I'd be inclined to just cover it up with a decent mesh, since it shouldn't be radiating HF anyway.