Use skins for free is not an easy task and not very elegant, so I developed this UDF that I had been using in some programs that I did but that was not in the way of UDF!
Are just two files:
1 - _USkinDLL.au3
2 - _UskinLibrary.au3
And only these three lines to add to your scripts:
_USkin_Init(@ScriptDir & "SkinsOldSkool.msstyles"); <-- Put here your favorite skin...
;Run or compile the script and enjoy!