The white is a painted finish and doesn’t go sticky. It also looks really nice, but white seems to be going out of fashion these days.
It’s just the black and the grey which suffer from the stickiness (which cannot be remedied, believe me). All other colours are fine as they’re painted as opposed to the soft-touch finish which breaks down…
Yes, that is the cable you need, set both speakers to Line mode and they will work straight from the PC with volume control from the PC. Any questions, please feel free to get in touch via my sponsor link at the foot of the page and I will be happy to help!