Even if the extension installation completes correctly, syntax highlighting does not work.
I found out that the syntax highlighting bug for Solidity VS Code Extension on Linux (Ubuntu 14.04 in my case) is due to a wrong configuration of the extension itself. To fix it and get correct highlighting you just have to change the case of a letter in the package.json file you find in:
Just check the grammar section of the json file and change the value of the "path" property:
Original (wrong) value:
Please note the upper case of 'S'.
Now it works fine! Thanks Juan for creating it!!