Chaps
My view is simple.
If you are dim enough to allow some con merchant to flog you bright coloured cables at high prices then you are a fool and deserve to be fleeced.
If you genuinely think that reversing a cable is going to affect the sound then you are so guillible you deserve to be parted from your cash and good luck to the con merchant who does it.
I can sympathise with victims but not with fools.
Regards
Mick