Some people have yellow in their eyes, did you know that?
Yes, I did know that. It is the color between green and orange on the spectrum of visible light.
Seem to very knowledgeable. Surfboards turn yellow over time. Not a big fan of that. 
speaking of turning surfboards yellow over time.Although it's not considered an ionizing radiation because its photons lack the energy to ionize atoms, long-wavelength ultraviolet radiation can cause chemical reactions and causes many substances to glow or fluoresce
That makes sense. Softballs have a different yellow color. More florescent. 
I play softball right now with from friends in the summer time. Also the name "softball" was given to the game in 1926, because the ball used to be soft.
I wonder how many different colors of yellow there are. 
I am not sure but I know that Crayola manufactures several different types of colored pencils in the shades of yellow. 
I was thinking the same thing. Have you ever heard about the yellow submarine?
issued in the UK in 1966". In the US, the song peaked at number two on the "Billboard" Hot 100 chart, behind "You Can't Hurry Love" by The Supremes and it became the most successful Beatles song to feature Starr as lead vocalist.
It became the title song of the animated United Artists film, also called "Yellow Submarine" (1968), and the soundtrack album to the film, released as part of the Beatles' music catalogue. An orchestral reprise to the song
in contrast to those with normal sight (trichromats) who can distinguish three primary colors). Dichromats usually know they have a color vision problem, and it can affect their daily lives. Out of the male population, 2% have severe difficulties distinguishing between red, orange, yellow, and green. (Orange and yellow are different combinations of red and green light.) Colors in this range, which appear very different to a normal viewer, appear to a dichromat to be the same or a similar color. The