Color Printing Order?

When printing multiple colors is there any way to tell the slicer to prioritize printing in one color vs another? I have issues with a multi-color print that includes black and white and it does the white after the black … I’m printing in PETG and sometimes there is a fine black string that mars the white. I am hoping printing in white first will avoid that problem because a good chunk of the surface layer is white (but not all - white, black and red).

Have you tried increasing the amount purged when you go from black to white?

I’ll give that a try, but I don’t think it’s a purge issue.

The order differs from layer to layer. The last color of layer 1 is the first color of layer 2. This reduces the waste a bit.