A theme dropdownmenue for basic building shapes

I was wondering if it is possible to make a theme dropdown for basic building shapes and maybe some scenerie items. There are a lot of buildingparts that have the same shape and only other texture. when u could make one building set and change the theme from there to scifi, fairytale, western, modern, spooky etc. via some selection list u dont have to scroll through houndreds of parts just to find the needed texture.[up]
 
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