Switch "theme" according to system settings

For those interested, I have satisfactorily solved this problem by altering the settings in `<user>\AppData\Roaming\Tordex\True Launch Bar\settings\setup.ini` via script. 

This allows for the TLB menus to switch between no color applied (light theme) to dark colors (dark theme), at the same time when such system theme changes.

The full code of my auto theme switcher can be found here: https://github.com/unalignedcoder/auto-theme