Feature request: multiple base colors

[skttl]

Some times I get a design from a designer where there is specified eg. 3 shades of a color.

I wan't to have these in the same color group in Tailwind. Usually I use the "middle" color as the base in tailwindshades, and then replace matching colors in the generated colorset with the two others.

But it could be very nice if you could add more base colors, and select which stops they represent. And then tailwindshades would calculate the rest based on your base colors.