Colour of LED strip can be changed via software. Accessories are standard as with all graphics cards. A support is also included in any case.

I have looked in the box. It only contains the card and a metal support for further mounting in the case because it is so big and heavy. No adapters and, in my opinion, no CD (?). but I didn't miss anything either.
I've never been interested in the LED lighting, so I can't answer your question.