Road Painting and Concrete Surface Tutorial by Bushlurker
Assigning colors to the polygons/polylines can be done in one of two ways.
For any polygon or polyline, when you select it there's color controls in the “properties” panel - you can set any color you like
For the “export shapes to imagery” purposes, you can “assign a mask color to a shapes layer” - that's slightly different - it DOESN'T affect the visuals you see at all - the only visual difference is that that layers “icon” in the shape layers list will have a colored border - and the color will be one of the colors already associated with a surface.
Export > shapefiles to imagery… choose a neutral “background” color like Yellow and export - you'll get blue lines on a yellow background
Assign that “gravel/blue” surface type to all the shape layers which have road lines, concreted areas outlined by polygon shapes, etc - then as above - export that raster image
Now you have all your “concrete” areas in blue, on a yellow background
Load your mask into photoshop
Now use Select > Color range and select the yellow
Yellow background disappears
“Flatten image” or “merge layers” - and “save”
Now you have a mask with all those areas in blue
Reimport mask to TB or “refresh from source” if you cleverly edited the old mask “in-situ”
Recrunch the Layers folder
Now - the mask has been reprocessed - “concrete” or “general purpose gravel” or whatever surface was associated with “blue” is now in use in those areas - open Buldozer and you'll see it