More visible and informative range circles

[rocketman71]

I often find range circles from air bases hard to see, the line is thin and the purple color somehow gets lost in the background. It would be nice for the line to be thicker and/or another color. It would also be nice with the option to have different colors for range for fighters, transport, bombers and recon which would make planning easier given a broader overview of what type of asset covers what part of the front.