DadropheniaIn a lit room they look really good. These color changers do reduce the brightness of the LED a tiny bit, but they were pretty damn bright in the first place.
ShardZer0I found them quite dim tbh...going to try 3d print my own
This was with the leds on full brightness during the day, you can see how bright the LEDs actually go.
http://imgur.com/x0jOLvM
http://imgur.com/jET2Yn3
photos taken with Nexus 5