It's coloUr - muhahaha!
I came here thinking "oh - an ADVANCED flash tutorial". But it's just some bloody tweening and colour thingies. Not even executed right.
This has Noob written all over it. Sorry but it is aimed towards noobs. You talk about colour yet you don't mention the Flash colour wheel and colour channels. You talk about easing in and out yet you leave what the values in the easing window mean (ie - the value of the easing variable and the difference of positive and negative easing values).
An advanced tutorial will go beyond even these simple concepts and delve into actionscripting and other issues. At best this is a beginner/intermediate level tutorial and even that's pushing it. Sorry, but I can't agree that this tutorial is advanced or even laid out well =(