Have been talking to David Cuartielles about what kind of circuit would fit my project. Togheter we came to the conclusion that a circuit that has the ability to talk to other chips over I2C and dim high power leds would be the best solution. That would give the opportunity to scale the project up fast and easily and have the modularity that I like. So if I finds out that I need to have 3 or 4 of this modules every meter instead of 2 as planned I can easily just slap antoher one in without affecting the other. It would probably be one of the cheapest solutions and it has never been done before (at least not what I have found) which is nice. Would be a little bit like BlinkM but with added high power leds to get some power out. Hope that it will turn out nice.
If anyone feels that this sounds interesting Im thinking of maybe selling this circuits after I have tested it out. Please contact me if there is any questions.