gradient ramp
Some gradients will pass through murky grey mid-tones when interpolating
using red/green/blue channels. Interpolating via
hue/saturation/lightness/value channels can avoid these desaturated
mid tones, resulting in more visually pleasing gradients.
The color spec can be set per stop in a multi-stop gradient, and there's
also an option to control the direction which interpolation should
follow for the Hue component of a HSL/HSV color spec interpolation.
Sponsored by North Road, thanks to SLYR
