artbyjo and her "GIRLS"

http://community.ovationtv.com/service/displayKickPlace.kickAction?u=2846658&as=16878

Why can only one color be Art ?

How cans an artist today complete with a work called “A Study in White” a white canvas painted white? Or “A Study in Black”? The sad part was, there was a green one and a blue, why stop there? If we are going to show future society what artist are capable of painting why not just post a color card from the paint shop to include all colors(Idea copyrighted by artist Jo Owens Murray 2010) Titled “Installation of color”
In a hundred years when society looks back at what the art world could creating, I do not believe a white canvas painted white will stand the test of time, How much can you learn about a of art when you are looking at nothing.