Less syntax highlighting in 12.1 community edition

you also need less support plugin, dunno if that one is available in community edition though.

Well, that plugin is probably not available on community edition...
http://plugins.jetbrains.com/search/index?pr=idea_ce&search=less

Is it not possible at all??

I am afraid it is not supported in community edition..
see:

http://www.jetbrains.com/idea/features/editions_comparison_matrix.html

Clear, thanks, I'll try to convince the managers that we need ultimate ;)