They have some other good KML files that they made themselves but I didn't find any that were 'animated' so I made this. I'm not sure how to automate it though.
ANTOFAGASTA, CHILE looks a little bumpy lately.
I did give the points a height value based on magnitude but even after I assigned 1000 meters of height to each point of magnitude, it just doesn't seem to make much difference and I stopped caring. Richter scale 2.5-3.8 is green, 3.9-5.4 is yellow, and 5.5-7.7 is red.