In my case the variable bg in ethan-wspace-appropriate-face is set to "color-235" which gets mapped to nil by color-values. ethan-wspace-alpha-blend then fails with wrong-type-argument number-or-marker-p nil as nil is set as the rgb argument.
The code should handle ansi color strings in frames.
In my case the variable
bginethan-wspace-appropriate-faceis set to "color-235" which gets mapped to nil bycolor-values.ethan-wspace-alpha-blendthen fails withwrong-type-argument number-or-marker-p nilas nil is set as thergbargument.The code should handle ansi color strings in frames.