show what happens when getting the guideline color

get the guideline color so we don't trip if the dict doesn't have it. Yet, this causes a different traceback

Lib/fontParts/base/glyph.py

@@ -1706,7 +1706,7 @@ def _fromMathGlyph(self, mathGlyph, toThisGlyph=False, filterRedundantPoints=Tru
                 position=(guideline["x"], guideline["y"]),
                 angle=guideline["angle"],
                 name=guideline.get("name"),
-                #color=guideline.get("color") # XX
+                color=guideline.get("color") # XX
             )
             identifier = guideline.get("identifier")
             if identifier is not None: