Support default dark-theme for the Circuit Display UI
Let's do the necessary small tweaks to support our UI for the default dark-theme:
- Remove background
- Use the light version of the Tor icon
- Use a light grey at the circuit graph lines
Guardneeds to have #D476FF
- At the bottom area, remove the background. It is going to make the helper text visible.
Attaching TB 9.0a6 screenshot