Malcolm,
Pull the color value apart into it's RGB components using RGBColor() from foxtools and then you can pick some generalized level between 0 and 255 that you want to use as the swap over point.
>Any tips on how to analyze a background's RGB() color and determine whether the background color is dark enough to use a transparent label with white (light) forecolor or whether the background color is light enough to use a transparent label with a black (dark) forecolor?
>
>Goal: I would like to automatically determine the most readable forecolor based on a user's choice of a background color.