Thermaltake just made some liquid-cooled DDR4 memory sticks that are infused with RGB lighting - HardwareZone.com.sg
RAM-30-V06 Water Block (Memory) [06mm, 1/4in ID]
Barrow Ramwbt-pa, Ram Water Cooling Block Kits, Lrc 1.0 12v, One Kit Two Armor One Block,one Block Maximum Support 4 Ram,cooler - Fans & Cooling - AliExpress