Unfortunately the paint would flake off tubing i agree. Thought i'd do something different with the cable sleeving, The Dfi X48 has green Uv slots - sata ports etc so green is the theme with sleeving and tubing. I bought some green heatshrink and rather than sleeving and shrink on the ends - its all heatshrink :-
and by overuse of a ciggy lighter we get this kinda camo effect which just fits in with the theme ! -
No cathodes on it duder - theres 2 triple UV leds - one above - one in the lowercompartment and a red Led strip in the base behind the mesh you can see !