Since this forum started at about same time when bitcoin was launched, If the theme colour of bitcoin is Bitcoin Orange,Grey and White, and the name of this forum is Bitcointalk, why is the theme colour of bitcoin (orange) not reflected on the forum's interface? Why is the theme colour of the forum Blue instead of Orange?
You have been answered, orange is not cool at all. I believe when this forum wanted to be created, many themes would be tested before the creation and they finally use this perfect fool light blue.
Just a point of correction, bitcoin has no colour, it is a digital currency and it is just not tangible but fungible and can be used as a means of exchange. If you meant bitcoin logo, that is bitcoin logo, because Bitcointalk is a bitcoin forum does not mean it should have the colour of bitcoin logo.