https://download.messengergeek.com/msgplus-plugins-scripts-skins.zip thought this would still be interesting as it has skins from 8.5 up to 2011, so i will repost it since the original thread from november of 2017 didn’t really get much attention
Note: Archive is 464mb
Note2: Obviously, 2009 or 2011 skins wont work with 8.5. but the plugins/scripts should, as they are not really version specific.