[enhancement] Custom background images and more background presets

[xITmasterx]

Feels limiting to just have to colors floating in the background, so I wonder if there's a way to enhance this and add more backgrounds such that it would stand out more (and not allow my eyes to tire out from seeing the same things).

[talentsache]

Noted for the roadmap: more background presets, and a custom image background with dim and blur. It's not part of the current releases. For now, the background colours follow the accent colour (Settings > General > Appearance).