In 1513 Vasco Nunez de Balboa was informed about a gold-rich area and he immediately recruited men from Hispaniola to capture the territory. He also sent letter to the King of Spain but his requests for men were rejected at the insistence of his enemies.
This has no relevance to how many different colors the human eye can distinguish. Just as there are infinitely many numbers between 380 and 740 â including all of the fractions, of course â so there are infinitely many wavelengths between 380 and 740 nanometers â the visible spectrum of light.
Cones require a lot more light and they are used to see color. We have three types of cones: blue, green, and red. The human eye only has about 6 million cones. Many of these are packed into the fovea, a small pit in the back of the eye that helps with the sharpness or detail of images.