The colors are the colors of the eyes if you built the robot by the instructions. It is your feed back to let you know what mode the robot is in or what action the robot is going to take or what the robot might be waiting on you to do depending on what you just had the robot do.

http://www.meccano.com/watch?vid=36

hi justin

ah if meccanoid did understand my command,i can see it by the color of the eyes, that i am in the correct menu. so there are 3 menu's. command/settings/motions

thanks for the link

ok some more testing whit speakers.here i have a speaker 8 OHm 86 DB i use a jack plug 3.5 MM the sound is amazing,no cracks or any ugly sounds. so am thinking to solder a female extention wire on the lotiny and see, how that works.here a pic and chort video in german language.