Yes I have this 3 led mod (they are green only leds like the original LE and topper). I have them positioned under the dvd boxset fishtank that was available a while back. Its awesome. I don't know how you would use RGB lights here. There is no support for them, you'd only get green.
Here is what I and several others have done on our pro.
https://pinside.com/pinball/forum/topic/twd-club-only-walkers-not-welcome/page/106#post-4020617
Quoted from Gamemodder:Thank you. But It doesnt have exactly what I need. Im trying to make this for my pro, but with the actual rgb lights.
https://mezelmods.zendesk.com/hc/en-us/articles/203390089-Fish-Tank-Illumination-Pro-Installation