project.create_label_class() request fails #32

In both versions 0.3.5 and 0.3.6, I have come across an issue when trying to create Hasty label classes using project.create_label_class().

Specifically, when color is left as None (i.e optional), an exception is raised because of this and I pass a hex color string for it to work. Moreover, norder also has to be passed an cannot be left as None. Lastly, the external_id parameter has to be passed as a string.

What am I doing wrong?