Hello, I am going to let my "experience" speak for its self. After 25 years of mouse manipulation designing some of earths important components I find that lighter colors work best with optical mouses. Now there is probably some test or some really nerdy dude going to run some test and blah blah blah...
I just know that when I am using my workstation or personal laptop or personal desktop that has a optical mouse I find myself testing the different surface with textures that are near me plus the colored ones and ALWAYS FIND MYSELF GETTING A SHEET OF PAPER AND TAPING IT TO WHERE I CAN USE THE MOUSE.
and the sheet is white.
Now I know how these optical mouse are constructed and I know the technology that it uses in order to do what it does, and all the answers that this forum got about the question. I see people noting the obvious. Science is not only about the obvious, its about what we discover. And I discovered that IT DOES MATTER WHAT SURFACE COLOR YOU USE FOR THESE MOUSE.
Like the human eye certain background colors we can see better with, right. So why NOT an optical mouse.
True it can "see" regardless of the color but I believe it "sees" best with white.
My unadulterated 2 cents.