Ours has the blue leds under the awning, nice glow. I just bought brighter white ones on ebay for under the cabinets and they use double sided tape. Outside in the wind tape may not be secure enough though. If you do replace them get the waterproof ones for the exterior.
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TT- 2016 Grey Wolf 21RB
TV- 2004 GMC3500 4x
There are dimmers available along with remotes to switch them on/off. I think the only way to change to color of what's there is to replace the strip. By carefully removing the original it could be reused in other areas though. I'm planning on running lighting in the cargo bay upfront and another above the headboard for reading.
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TT- 2016 Grey Wolf 21RB
TV- 2004 GMC3500 4x
Installed our Awning LEDs several years ago,44 button control dims/change color/and other things we Never use! 3M tape install under rail,all Still Good! Youroo!!