Text color changes don't survive command line export

Just hit another of those command line export oddities: if you assign a color to a text label, or change its state to disabled to gray it out, the applied color is lost when the mockup is command line exported to a PNG. It's pretty much the same problem as with command_line_png_export_ignores_vertical_curly_braces_color, and turned out to have the same workaround: bump the font size from the default 13 to 14.

So, for what it's worth, there's a weird consistency to the color dropout problem. Haven't had a change yet to experiment with other components, but with text labels and curly brace text both afflicted, there seems to be an underlying issue.