I would like to use a different skin for MO, UAT, and Production.  When code is moved from MO to Prodction.  I can't exclude the CSS file and images.  I need to setup some type of logic so it recognized which environment it's in and load the correct skin.  

I am not sure this can be done, just thought I would ask. 

I need to change the color and the banner.  So I would need to just change the CSS file and one jpg.  And maybe the portal.ascx file.  If I can only change the CSS file, that may work.  Thanks for the help.

Jason,

An option would be to create 3 of the same skin layouts with different names, say mo-skin, uat-skin and prod-skin, and then also create their respective CSS files mo-skin.css, uat-skin.css and prod-skin.css which will be loaded last in the stack of skin related CSS files. Within each of the individual css files you can now specify the different settings and these will over-ride the default settings of the skin.css file.

Example css in skin.css file making the background color white:

body#body{
background-color:#fff;
}

example CSS in mo-skin.css making the background blue:

body#body{
background-color:#00f;
}

the same CSS in uat-skin.css making it red:

body#body{
background-color:#f00;
}

You can then use the appropriate skin as the default for each setup and your changes will apply.

Hope this helps.

Rick.