[Zubersoft]

I can certainly consider changes for making it faster to select recently used colors. Having said that, it doesn't take much effort to click the color, click the color you want (the most recently used ones should be visible in the top section), then tap the color againt to select it and close the dialog. So that would be three taps versus one, so it's certainly slower, but doesn't require any changes. I'm not opposed to something along the lines of what you've demonstrated in your picture though. I would just have to clearly show what the current color selection is by outlining the box in some way that shows the selection state while not conflicting with whatever color is shown (i.e. if I use an orange highlight but an orange color is selected, it wouldn't be clear that it was selected). Or I can do something similar to the color selection dialog where I put a checkbox in the box that is currently selected. 

Is there any reason you aren't utilizing the favorites feature? That's honestly the fastest way to switch between pens of different colors. You can set up favorite pens in each color you use at the size you typically use, and then just tap that in the favorites popup which you can leave open for quick switching. Then you never have to access the pen settings dropdown or the edit popup.

Mike