Changing preset colors in Keynote

I know how to create custom color palettes in MacOS Keynote. I also know that different presentation templates come with different set of preset colors. However, I can't find a way to change this set of preset colors in a customly created template. Whenever changing colors, instead of clicking on the preset colors button and selecting the color (2 clicks, marked A on the diagram below), I need to click the color wheel, select the palette and select the color (3 clicks, marked B on the diagram below).

Is there a way to attach a palette to a template so that it becomes its custom set of preset colors?