[Trinidad] Understanding Trinidad Skinning?

[Chris Hane]

We are trying to create our own custom skin for Trinidad and I have a basic 
question:

First, where do the defaults for a paticular element come from?  For 
example, we are trying to skin "af:column::header-text".  When we remove 
the color element, a default of #669966 is put into the transformed skin.

I found the skin selector documentation, is the another doc describing how 
skins works and their default values?  I have css people working on 
defining the skin and they are having a slow time trying to figure this out.

Second, the skin selector documentation states that it is not up-to-date. 
Where can I find updated info - source code only?

Thanks,
Chris....