Q. How can I set a colour?
A. There are 3 buttons on the back of the joycon that I have added that can choose colour. speed. or light patteren.
Q. I bet it kills the battery!
A. In fact... no, the leds use such a small amount of power that I have played my Nintendo Switch untill it was at 20% and the Joy-Cons showed a small amout of battery used.
Q. Do I get new joy-cons or do I send you mine?
A.You get a set of brand new joycons. no need to send me anything at all.