hermit2ec

I'd love to have four custom keycaps, (TAB, F, J, and the quote/apostrophe key), that are a few millimeters taller, (the size of the F-keys and the top number-line keycaps), and textured. I'd like them in black, with backlighting, and double-shot, and compatible for a Corsair Strafe Keyboard using mx keys. Is this possible?

There are lots of World of Warcraft addons that suggest the next action by lighting up the action on your tool bar. For example "Tellmewhen" and "MaxDPS". I am trying to repeat that on the keyboard, so that the key associated with that action lights up at the same time, but don't know how to go about it. I hope this is the right forum to ask this question.