Red, Green, Blue Interior Cell Colour

Recently I was giving a half day course on heat maps and came up with the novel idea of creating a custom function which would identify the primary colour scheme for a cells interior colour.  It is in an effort to save a little time in the creation of a colour scheme for heat mapping.  Rather than laying down the colour and looking up the Red, Green and Blue numerical combination I simply lay the colour down and the custom function does the work for me.

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