Feature Request: "Option to Change Theme"

[lexterror]

Hi, I really like your game! I created 2 stones with inkscape for your game that I'm currently using to play with. I'm attaching the stones to this message. Feel free to use them!

http://www.mediafire.com/folder/93b7b9drp1g3n/SHARE

*For the black stone I went into gimp and adjusted the levels to make it darker.

I thought maybe in the future you could have different themes to select from.

Thank you.

[lexterror]

Hi, I just finished adding css shadows as well, this is what it looks like now:

https://i.ibb.co/smBQvBQ/Screenshot-20210519-201410.png

Please feel free to use the svg I posted earlier!