I wonder if there is a way to precompile *.less files(http://www.dotlesscss.org/) with visual studio.
The site gives me a dotless.compiler.exe
There is also another way to precompile during development.
The dotless project features a commandline compiler (dotless.Compiler.exe) that can compile and minify the CSS.
You can also use the compiler.exe with the --watch parameter where it will keep running and scan your input file for changes, regenerating whenever you make changes to the file. Thus making you independent from Visual Studio.