Tint swatches need to be link to their original colour

[Wosven]

Saving a Tint swatch from a Global colour should keep its parent colour and only record the tint value.

That's the usual way to work with Pantone colours and use them at different values in a document with accuracy — not needing to find and check another object's colour to use the same value —, and being able to modify a colour accross a whole document.

As they are implemented now, saving a tint as swatch is no more than using the colour picker and adding a new swatch that won't be connected to its parent's colour: we already can do that.

Example of correct use of "Tint swatches":

I've got a Pantone and different tints of this colour:

I can select another Pantone, Tints will be modified accordingly:

 

In APub:

They behave as completly different and autonomous colours, that's completely useless. If I wanted that, I would have use the pick colour and added a swatch this way.