The black/white/silver fabric looks very much like the stuff I bought for a little project here (but I bought via ebay). It does look absolutely fine but just be aware that it's quite thin, so in the right light you may be able to see through it - which may or may not be an issue for you.Some funky guitar cab fabrics here:
https://www.stewmac.com/electronics/amps/amplifier-parts/grill-cloth-and-tolex-and-piping/