This industry we work in is magical. For the first time in human history, it’s possible to be represented (almost) solely through the merits of your work. Build something magical, push it up to GitHub under a pseudonym, and you could become one of the most sought after programmers in the world.
Red and green are the colours most affected by colour-vision deficiency. Almost no one has a blue deficiency. Accordingly, nearly everyone can see blue, or, more accurately, almost everyone can distinguish blue as a colour different from others. It was pure good luck that the default colour of hyperlinks is blue with underlining.