Hello. My favorite topic is blue because it's the color of my eyes and the sky. 
that is interesting. You may find it fascinating that blue is one of the three primary colors?
I do find that fascinating. Blue is also the color of our blood which is a rare fact. Or blood only turns red as a reaction to the exposure of oxygen. 
that is true. maybe it has something to do with color mixing the and the visual effects of a specific color combination.
Could very well be. That's about all I know of that category. What is your favorite part about the color blue?
initially within a partisan controversy over Isaac Newton's theory of color ("Opticks", 1704) and the nature of primary colors. From there it developed as an independent artistic tradition with only superficial reference to colorimetry and vision science.
Color abstractions.
The foundations of pre-20th-century color theory were built around "pure" or ideal colors, characterized by different sensory experiences rather than attributes of the physical world. This has led to a number of inaccuracies in traditional color theory principles that are not always remedied in
of the painting, chosen to evoke emotions. "A certain blue penetrates your soul", he wrote. "A certain red affects your blood pressure." He also was familiar with the way that complementary colors, such as red and green, strengthened each other when they were placed next to each other. He wrote, "My choice of colors is not based on scientific theory; it is based on observation, upon feelings, upon the real nature of each experience ... I just try to find a color which