no color shown

[joprice]

I'm trying to overlay a shield with shield: "1.0-11-orange", but not seeing the orange color. The same parameters work for the img.shields.io endpoint, so unsure why the color is being lost:

[joprice]

Oddly, if I pass no_badge, the color shows up.

[joprice]

This seems to be some compat issue with the underlying imagemagick binding library. I was using imagemagick installed via nix, and it seems it was silently failing. After removing it from my nix profile, it works as expected, but adding some params like shield_geometry throws gm composite: unable to resize image (Non-zero width and height required). Is there a version of imagemagick that is known to work with all the used transforms?