Hi Joe, I don't believe the dots color matters. I don't recall ever seeing that subject. The raised lettering is a visual/tacile aid, where as the dots are pure tactile, so I don't think it matters. The regulation specifies that it has to be directly under the text, so I'm sure anyone using it would be accustomed to touching under the raised letters.
If that's wrong, someone please correct me. I do also believe that the people who sell the RasterBall product sell it in white, clear, and one other color.
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