Better solution than mod() while indexing

In this cutout, order is incremented each time through a loop, most likely more times than there are indexes in colors. Is there a better way to grab values in indexes in colors that avoids the if statement entirely?

    ndx = (mod(order, length(colors));
    if ndx = 0
        ndx = length(colors);
    end
    color = colors(ndx));

Answer 1

[Guillaume]

Put the last colour first:

colors = [colors(end), colors(2:end-1)];

Then, simply mod and add 1:

color = colors(mod(ndx, numel(colors)) + 1);

If the loop just contains the code shown and the increment, then the loop can easily be eliminated. We would need to know how ndx is incremented though.