Shaded Relief for Maps
Different colors and styles for shaded relief are available. If you are using just lines on the map a multicolored shaded relief will work great. If you are using fills in your Illustrator file, than a white shaded relief will work best. With the white shaded relief you can you use transparency on the other layers to get the right effect.
Different map shade samples of the same area:
Custom Map Shade Style #1
Custom Map Shade Style #2
Custom Map Shade Style #3
Custom Map Shade Style #4
Custom Map Shade Style #5
Custom Map Shade Style #6 (white)