People have different tastes in cars and styles. People on the internet need to accept that. Coloured wheels DO look good, you just have to know what colour to co-ordinate it with. It depends on the style you are going for aswell. Some people may be trying to pull off a drift style vibe, hence the bright colours, but it stands out, obviously, because it for some unknown reason, pisses people off.
I have a Futo, blacked out windows, black on black paintjob with blue rims. It looks awesome. It's not over the top and the colours go well together. It's a style and it has been for years, if it is done tastefully enough and the colours match each other well, go for it. It does look good. People have to accept other peoples tastes and style.