MATLAB: How to built custom a colormap

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I want to built "colorRGB" matrix with k-by-3 matrix (k is predefined number by the user)
Let's say: I need 5 colors (k=5; & random color, but NOT include white color)
colorRGB=[0, 0.4470, 0.7410; 0, 0, 1; 0.85, 0.32, 0.09; 0, 0.75, 0.75; 0.25, 0.25, 0.25];.
colorRGB=[0, 0.4470, 0.7410
0, 0, 1
0.85, 0.32, 0.09
0, 0.75, 0.75
0.25, 0.25, 0.25]
How can I do that? In case I want to build 100 random color matrix. How can I do that?
(Plz see picture below for visualization)

Best Answer

Try this:
yourColormap = rand(k, 3); % Colormap with k random colors.
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