yep, this is the content:
eWindowTitleBarBackground,0xFFFFFF,0xFF0000
eWindowTitleBarForeground,0xFFFFFF,0xFF0000
eWindowTitleBarTextBackground,0xFFFFFF,0xFFFF00
eWindowTitleBarTextForeground,0x000000,0x00FF00
it seems quite obvious that it sets the background color and so, but you're not able to put it back to the calc again.
I changed it and send it back to my calc, but it gave an error, because it doesn't understand this filetype