For prototyping, Infineon has a RGB LED lighting control shield for Arduino, based around its ARM Cortex-M0 XMC1202 ... DMX512 control is supported with a mounting option for the interface chip.

[Steve] from Hackshed did just this: he integrated an Arduino based webserver into a new network controllable RGB lamp. What makes this lamp unique is that the RGB LED bar comes from an old Epson ...

If you’d like to get more specific, Michael Klements’ Arduino-based scanner lets you quantify colors in numerical RGB values via a TCS34725 sensor. User interface for the handheld device is ...