Problem 1683. Create different color vectors.

When producing figures with multiple lines on, you often want the lines to all be visible and different colors. Given the need for n colors, produce a cell of n different RGB color vectors, preferably as different as possible!

Examples

1) Input: x = 3; Output: y = {[1 0 0], [0 1 0], [0 0 1]}

2) Input: x = 5; Output: y = {[0 0 0], [0.5 0.5 0.5], [1 0 0], [0 1 0], [0 0 1]}

Note: to avoid colors being too close to white, it must NOT be that sum(y{i}) > 2.5