I don't think there's much about for 8.5 yet, esp. since this is still in beta. But if you want to learn about skinning etc. i think you be best off looking in
The Skinning Section Of Mess.be Forums 
Note: Modification of the original messenger files is against Microsoft's Terms Of Use
quote:
Originally posted by http://tou.live.com
You will not disassemble, decompile, or reverse engineer any software included in the service, except and only to the extent that the law expressly permits this activity.
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