Tip #1: The orange is because of something something EU, else a few countries would be red, the rest gray.
Yellow seems to be full members of the ESA - pale blue.
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Green and Blue have space agencies but have not launched their own rockets.
Red and orange have launched their own rockets.
What the distinction between red and orange or between blue and green is I'm not sure.
The top countries are USA, New Zealand, Switzerland and Columbia?
Something to do with money laundering or corruption?