This project was developed as a disk monitor widget for windows widgets.
disk_letter takes a specific disk name. If "Total" is written, it shows the total usage.
{
"usage_font_size": 18.0,
"usage_foreground": "#FFBC8F8F",
"graphic_color": "#9e269a",
"graphic_timeline": 200.0,
"disk_letter": "C" // "Total"
}