display "none" in list of colors

[sarahcd]

Where there is a dropdown list of the default color options, include "none". At least in the shapefile tab, it is not included, and leaving it blank causes an error when the images start processing.

[jemissik]

A couple of questions:

• For the shapefiles, do you think it would be better for the color to default to "None", or to default to an actual color (maybe black?), to avoid the error?
• If the color is "None", is the desired behavior that the shapefile is invisible?
• Is the "None" option for color desired so that you can hide certain shapefiles, without needing to delete them from your settings? If so, an alternative option might be to add "Hide layer" checkboxes or something like that, so that layers could be toggled on or off.

[sarahcd]

Default of black is fine. When this happened, I think I was trying to assign a face color (fill) for a polygon shapefile, but use "none" for the edge color (outline). So the purpose was not to make the shapefile invisible (although your on/off toggle idea could be a partial solution to avoid the separate issue of users needing to re-build the stacks of shapefiles).