The Orange/Blue Tactical Tracers are $83 @ NCIX $82 @ Newegg. $80 for 8GB of RAM is pretty steep. The Red/Green Tactical Tracers I linked earlier are on sale for a more agreeable $65.
Tactical Tracers are the only LED RAM I know of.
It depends on whether you're interested in temperatures or noise. Liquid cooling is noisier (due to high RPM radiator fans) but has slightly better thermals. The Noctua D14, an air cooler, has excellent thermals (almost as good as a H100) and is quiet.