Raidmax has just launched their MX-902F, which is a set of two heatspreaders that are made for full-length DDR4, DDR3, and even DDR2 memory modules. These features a diffused top section that has RGB LED lighting with five addressable RGB LEDs.
The heatspreaders themselves are made of aluminum alloy. Each heatspreader takes a standard 3-pin addressable-RGB input and you can daisy-chain a single aRGB source between the two. The heatspreaders have official dimensions of 127 mm x 8 mm x 51 mm (LxWxH). No word yet on pricing.