Feature Request-Option for dark mode

[Kevin Werner]

Please add an option or two  to have "dark modes" on pskreporter.  This would help with brightness in the shack and I pretty much always have pskreporter open in a browser.

All the text areas would have black/gray background with light font.  I was thinking a possible way to darken the map would be to have a second field just like the darkness, but for the sunny area.  Or maybe better is the Dark Matter style from OpenStreetMap if that is possible.

Thank you!

Kevin KD9SPR