Canvas background should not be white

[Vidhaaaaaa]

I found out that there is a white/transparent margin on both sides of the grid on the canvas, and it merges with the grid background if we don't have a sprite as the background, it would be better if there will be some kind of a thin border with it!

NOTES (by @kognise):

I propose just changing the background to accent-dark or black (like the Sprig display) to make the screen area not blend in with the background.

[leomcelroy]

I was discussing this with Lexi yesterday. There should certainly be some visual cue to differentiate the canvas from the background.