Advice wanted on modding a Jill-Intelli

[Jay R]

I have a Jill-Intelli that I want to upgrade. It has a 3W Luxeon U bin at the moment. I want to upgrade to a better light output but when I took it apart I noticed that there wasn't much in the way of heatsinking on the back just two, close spaced very thin driver boards. There isn't much room to work with. My concern is that if I were to stick a Seoul LED in there, will it over heat and turn blue ?
Any comments welcome.