Dark mode

**Is your feature request related to a problem? Please describe.**
no

**Describe the solution you'd like**
a way to enable a darkmode

**Do you have a workaround?**
no

**Comparable features in other tools?**
https://chrome.google.com/webstore/detail/dark-mode/dmghijelimhndkbmpgbldicpogfkceaj

I know it's a nice to have, but only an idea. thank you