Just the colour, look at the silverish fender grills you'd see on a fender amp for ox blood and for black its black.
1st Schecter 8er? in UG's 7 String Legion
Conklin GT-7
Hartke Hydrive 210C
Digitech Screamin' Blues
Bugera 1990 Head
Dunlop wah
Saxon snakeskin 1x12 cab
I Nouni
Oxblood is dark red, IMO looks really nice with white tolex. Fender has that on some of their Hot Rod amps and other speaker cabs. And black is, well, black.
ahh... okay, thanks!

The oxblood one looked like it was black, which confused me. Lol.