You are hitting the key point!
There is an extra USB power holes near USB connector on my PCB.
RGB smd stips are much more powerful, flexible way than the current static dull underglow, in my opinion.
And very soon we will have thin fiber RGB strings on the market.
When i proposed underglowing and RGB strip to winkeyless.kr, he had no idea what is it, and expressed no liking LEDs and even underglowing, back in 2013.
Now I am working with more variety of people to design Next generation PCBs and FIrmware, Softwares.