These icons had a kind of border in ViewBackground color, which made them look a bit strange. I don’t know whether that was intended.
But with swap_colors.sed (T12855), the generated dark version didn’t match the original dark version.
So I removed the ViewBackground elements.
* set-bottom and set-internal didn’t have this border, but they had elements outside the canvas (actually the border), which are removed now.
* set-internal also had one element outside the canvas.
* set-internal-vertical had the vertical edge outside the canvas. I fixed that.
* set-none had all outer edges, so it was identical to set-all. I removed the edges, because it should probably have “none” edges.
* set-all does not need fixing.
Screenshots:
Before: Light and dark versions have the ViewBackground border.
In the autogenerated dark version, the border looks different.
After: No border in light version and autogenerated dark version.
Template file. Cyan is a proxy color for ColorScheme-Text with transparency 0.5.