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New board settings in account menu

Lichess added a hue adjust, brightness, and (if your background is a Picture) opacity slider. Enjoy!
<Comment deleted by user>
Bug on Chrome/Windows: Board size isn't saved but instead always goes back to 100% after using slider to change the size and then closing and opening a random window, e. g. analysis, Lichess TV, etc..
It is a problem for other systems (Linux) and browsers (Firefox), too. Quity annoying...
<Comment deleted by user>
@b4c4d2 said in #7:
> With a custom background the header is once again in front of the 3D pieces.

https://i.imgur.com/nzEX7fh.png

But it's such a lovely blur!
Just pretend that the site header is actually painted on a slender pane of frosted glass that is six inches above the chessboard. That is why it blurs the pieces.