Sounds interesting. I might take 2 sets depending on the pic.
However, Ninja got it right. First of all: what's being offered here - knobs w/o HVAV panel, right? So, you just pull the old knobs off, put the new ones - clear ones, and what we are getting? White light shining thru the clear knobs, and still green light shining thru the green marked HVAC panel? Doesn't sound right.
I guess if this friend of your father can do something more, such as panel, knobs and LEDs as a set - you will get tens and tens of orders here.