We followed the original color convention of the 5 Olympic rings: blue for Europe, yellow for Asia, black for Africa, green for Australia and red for America.
This color convention was later changed in 1951 by the Executive Committee of the International Olympic Committee (IOC), with the following motivation: "On page 18 of the Green Booklet (both French and English versions) the text says that the colours of the Olympic Rings attributed to the respective five continents are as follows: Blue for Europe, yellow for Asia, black for Africa, green for Australia and red for America. According to the documents in the possession of the Chancellery, no definite proof can be found that this allocation of colours was P. de Coubertin’s original idea at the very most he might perhaps have admitted it afterwards. To put an end to all controversy on this point the E. C. of the I. O. C. has decided to cancel this paragraph and not to allocate any colours to the various continents." [Official Reports, PDF]
You already did: you are one of the 7 billion people depicted on the page!
If you want to proudly show your contribution to this project, you can purchase the "6,999,999,999 people + me" t-shirt:
In the greatest game of Where's Waldo? (Wally), various reddit users claim to have found Waldo among the 7 billion people. A reddit user ("Zaapo") went as far as to post this screenshot as proof.
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