How to add a color scheme to PyCharm?

Solution 1:

Instead of tweaking with file path.
1) Download a color theme from here
2) Pycharm > File > Import Setting > point to the color theme downloaded in (1)

Pycharm should recognise this as a theme (i.e. only the theme checkbox is available) in the import dialog that follows (2)

Solution 2:

Looks like I tried placing it in the wrong place. According to this page, The file should be installed in <User home>\.PyCharmXX\config\colors. Then, restarting the IDE enables the selection of the scheme from the Settings pane.