Background / Night mode / Color themes

We are all familiar with the current background and color scheme.

Many of us pet our Aavegotchi late at night and would like the option of being able to play the game without burning our eyeballs.

Many other websites have a 'night mode' option.

I propose that we add a similar dark color theme so that we may have the option.

Background example: https://i.ibb.co/3Cyr2JV/bg.png

This could also pave the way for alternative color schemes that one could select. (Blue, Green, etc.)

Thaank you, frens