Ha! Look over the Bermuda Triangle :) Colors is a really good idea and I experimented a bit with changing colors based on direction E/W and N/S - I like the id

Ha! Look over the Bermuda Triangle :) Colors is a really good idea and I experimented a bit with changing colors based on direction E/W and N/S - I like the idea of using velocity though and since it's not scientifically accurate, estimating based on position within the arc is probably good enough.