You need to have a craft high enough to synth the object to die it. So if you want to dye a level 20 piece of gear made by wvr, you need to have wvr to the level of that gears synth which would probably be wvr level 20-25. Dying gear isn't really something low level people worry about. To get a craft to high level you need to leves and farm, in order farm its almost required to have a 50 so you can get the most out of the time you have.

So get a 50 battle class, pick which crafting class you like. and 2nd its not important to even really have dyed gear until you're around 35-40, you outgrow gear to fast pre this to justify having dyed gear unless you can make it.