About This File
This is the only way I found how to have a bunch of color that are unique and easily distinguishable. The maximum I saw in the web was about 26. This one offer 55 of them without gray tone. You can modify this VI to support gray tone as well and goes up to 60 colors.
What's New in Version 1.1.0 See changelog
I think this one respect a more realistic usage since it gives only colors that differs significantly from the selected color as input.