Improve monitor route OSM segment colours

[vmarc]

When displaying monitor route OSM segments, the colours used should be sufficiently different. In the example below the colours of segment 4 and segment 5 are too similar. It is difficult to see the difference between them.

Thanks to @pyrog for reporting this problem.

[vmarc]

The colours have been changed to List of 20 Simple, Distinct Colors (color order: "convenient", accessibility: "95%").

Before:

After:

Example:

[vmarc]

Published in release v4.1.11.