A:AnswerFN2 + F9 = CHANGE PATTERN
FN2 + F11/F12 = CHANGE BRIGHTNESS
FN2 + F10 = TURN OFF LIGHTS
FN2 + BACKSPACE/MR = WASD LIGHT ONLY
You cannot change the color since the model only has one color LED.
A:AnswerDepending on how hard you type it is going to make noise. It is very clearly louder than a laptop keyboard for example. However, it's nowhere near as loud as a clicky switch keyboard.
A:AnswerOUTEMU
I tried other switches but the legs were too thick and shaving them wasn't worth the effort.
On Amzn look for Granvela Store OUTEMU (Gaote). This is the brand I got and is 100% compatible and swapped without fuss.