Thank you again Grumpy. Very nice of you to give me the basics put into context...
I got one question though. There´s two lines for each channel in the code, and you just explained the second one.
This line: if(tlc_addFade(1, 400, 0, millis()+ duration, millis()+ duration + duration)
What about the first one, can you explain that one too?
This line: if( tlc_addFade(1, 0, 400, millis(), millis()+ duration )
When I play around with it I can´t seem to make it work proper. Guess I´m just putting values in the wrong parameters.