After having great success with GeiL's EVO Spear sticks, we're pretty much A-B testing non-RGB sticks with RGB sticks in our performance benchmarks, just to see if there are any weird differences in performance we can attribute to these fancy flashing LEDs. Take a look at the results and decide for yourself if the inclusion of RGB LEDs has an impact.
CineBench R15
PCMark 8 Conventional
SuperPi
wPrime