In plot graphs, often it's needed to use a several colors that can be easily differentiated on a first look on the graphic. With this function you can call easily (by name or by code) a selection of 15 colors.
It's very simple and there are more elegant ways to do it, but I think it's a very functional solution.

Examples:
for ccc=1:15
plot(ccc*ones(1,10),'Linewidth',4,'Color', CustomColors(ccc))
end

plot(ones(1,10),'Linewidth',4,'Color', CustomColors('Coral'))
plot(ones(1,10),'Linewidth',4,'Color', CustomColors('DeepSkyBlue4'))