Change watermark color without having to close the color selector window

I love the new Instant Watermarking tool in PhotoLab 4. What would make it more instant for me would be if I could quickly switch from one color to another and see the impact of the change without having to close the Color selector tool.

Right now, I click on the color square next to the font style to bring up the Color selector. Then I choose a color and have to close the tool before I see the change in my watermark. I would like to leave the tool open.