• Symbolize the polygons with a fill that is slightly darker than the surrounding land color while leaving the outline either minimal or absent (for maps without adjacent towns).
• For maps with adjacent towns, the fill color can be varied so that adjacent towns are distinct.
• Symbolize the polygons with a stippled, striped, or gradient fill to emphasize the areas while not completely obscuring the underlying details.
• Simply outline the boundary and do not use a fill color.
• Create a transparent fill color.