I like the RGB honestly but I don't like the rainbow puke. I'll actually set it to say a slow color cycle (breathing for example). But there always have been watercooling options for memory. I know when I had the CH4-Extreme with full coverage waterblock on the motherboard itself I just about bought the ram cooler and I had HDD water blocks. I was at the point that I was just about out of things to liquid cool. (I also had a liquid cooled PSU).
I never did get the waterblock but I did have Corsairs ram based fan cooler for a while. It clipped onto the ram slot clips and had two tiny fans that pointed directly at the ram.
The air cooler was a lot like this one...
Corsair Dominator Platinum Airflow RGB LED Memory Fan Cooling : Amazon.ca: Electronics
www.amazon.ca
The reason i never did liquid cool the ram... but they were kinda ridiculous. The Koolance one was really nice and actually involved waterblocks going down the sides of the sticks but it meant each stick had it's own individual waterblock and had to take off heatsinks and hook up tubing to each individual stick. The EK was random block that just stuck across all 4 sticks in a 4 stick bank and barely made any contact.