Would it be possible to "darken" the ui (speaking of Collections,the library, the forum etc.) - all this unused brighty whitey space is unnecessary and so discomforting for my eyes.

And since i personally dislike the color blue, i would like to suggest to give the user 5 colors to choose from for the main
buttons for switch, rotate ,move, grid etc. .

Great Job , i love mecabricks, please just dont direct our eyes to areas, where nothing is happening- please give us a dark color theme -
ouh same for the preview thumbnails in the workshop of course-