Set cell color based on function or expression

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The colors of the cells can be set like so within the scimrc:

color "type=NUMB fg=GREEN bg=DEFAULT_COLOR bold=1 dim=0"
color "type=CELL_NEGATIVE fg=RED bg=DEFAULT_COLOR bold=1 dim=0"

It would be great if there was a way to apply a different color based on a function. For example given the color settings above, all non-negative numbers are green and all negative numbers are red. If there were a way to set the fg color to "WHITE" when the cell value is zero that would be cool. Or If there were an expression that would apply a highlight to the highest value in a column or row, or even the highest 10 values would have red highlight gradient, where the brightest red would represent the highest value in the column.