Compile is broken with color change

[chrissimpkins]

The fontmake compiler raises an error about a missing default master in https://github.com/Gue3bara/Cairo/runs/8157091361?check_suite_focus=true at commit 246a5c5

fontmake.errors.FontmakeError: In 'CairoNormal.glyphs' -> 'master_ufo/Cairo.designspace': Generating fonts from Designspace failed: Can't find base (neutral) master in DesignSpace document

Maybe it is getting hung up on the following weight axis default location definition?

    <axis tag="wght" name="weight" minimum="200" maximum="1000" default="457.894737">
      <map input="200" output="36"/>
      <map input="300" output="50"/>
      <map input="400" output="0"/>
      <map input="500" output="88"/>
      <map input="600" output="96"/>
      <map input="700" output="138"/>
      <map input="800" output="158"/>
      <map input="900" output="178"/>
      <map input="1000" output="232"/>
    </axis>

[chrissimpkins]

If I re-define the designspace axis configuration to the following, the build completes successfully and I see your color palette change in the variable font:

    <axis tag="wght" name="weight" minimum="200" maximum="1000" default="400">
      <map input="200" output="36"/>
      <map input="300" output="50"/>
      <map input="400" output="80"/>
      <map input="500" output="88"/>
      <map input="600" output="96"/>
      <map input="700" output="138"/>
      <map input="800" output="158"/>
      <map input="900" output="178"/>
      <map input="1000" output="232"/>
    </axis>