title: How do I alternate between different marker colors on matplotlib?
body: <p>I am plotting a scatter graph using <strong>matplotlib</strong> in Python. Suppose I want each marker on the graph to be a different colour, so it alternates between a set of colours <em>(e.g., the points go red, green, blue, red, green, blue, etc.)</em>, how can that be done? Looking at the documentation I'm guessing it has something to do with <code>set_markerfacecoloralt(</code>)?</p>