Responsive Foundation 6.0.0

A tinting helper function for grayscale variables. If you're adding your own grays and want to take advantage of tinting, you can use this function to tint your grays.

The actual tint is dependent on two variables: $tint-hue, which is the color to use as a tint, and $tint-saturation, which is the maximum saturation of that tint. More saturation happens with dark colors, less or none with very light colors.