Colour: A particular shade of red. To be precise, the range of colours around CIE chromacity x 0.41, y 0.27 to 0.33; depending on your hardware, they look something like:
... and named such features as the Great Barrier Reef and the Great Australian Bight.
G
Vasco da Gama, (1469?-1524), first to reach India from Europe by the sea route
Thomas ...