Ram dosn't even need heatspreaders. Only in situtions where you are overclocking your RAM super high with extra volts would you need any kind of cooling at all.
That being said, RAM heatspreaders, heatsinks, and fans look mighty sexy... ;-)
No, since the fans are spinning fast you will be able to see "through" them, and the LEDs will shine through.
Agree 100% ^.
Just for looks, OK. Other than that, no need for it.