Timeline effect - movie clip fade out?

I’ve been dissecting a flash template and have stumbled into an area I cannot grasp.

I have a timeline with a several keyframes referencing a movie clip comprised of several other movie clips. As the timelime advances, all the component clips that make up the referenced clip slowly fade to black. How does this happen? I don’t see a tween controlling this, I don’t see a timeline effect to edit… I’m not [COLOR=Red]understanding something basic[/COLOR] and want to make a simple change to that fade - from the black it is now is to another color shade.

Can someone please educate me - I’ve tried googling and forum sifting but I’m defeated right now.

I’d attach the fla to this post but the file size is exceeds the size restrictions. Here’s a direct link to the .fla on my webspace - www.jassanius.com/menu.fla

The library is large, but I’ve edit everything down to the single layer and timeframe in question.

ive had a quick look.
so lets use the tween between the keyframes 145 and 154. when u click on the MC on keyframe 154 it says it has no effect when it reallly does!all it is doing it makingit darker! via the contrast effect(-100) ( unfortunately i have no idea why, maybe one of the others may know) with that in mind once you have clicked on the mc (symbol 491) if you change the color as you normally do through “Advanced”.

but if you do this u may have problems with the Text still showing so it might be better to have a seperate coloured block over the top which you can fade in to cover that mc below.