Dr. A writes:
Finally, the claims about gematria, if true, have nothing to do with the Bible as such, just the Hebrew language. If some Israeli atheist wrote a book on the non-existence of God in Hebrew it would also be a work in a language having the stated property. What of it?
If I am understanding your question correctly: the reason that the "colours match frequencies" is evidence of god is because some people believe god invented Hebrew.
God => Hebrew => Color frequencies => God => QEDuh
Similar to:
God => Bible => God