Known problem. It happens when the color isn’t one of either the predefined colors or the sixteen user-custom-defined colors. I believe this one’s a kernel fix, not macro code (although not being at a machine with Multi-Edit installed right now (horrors!), I can’t verify. It was just judged to be a bit further down the fix list than you might like. The easy workaround is to just come up with one color scheme you like, using only the colors I mentioned above, and apply it to whatever language you want to print.