Right now when we select text we have the ability to highlight on the floater menu. However, it defaults to the last colour used. I change colours depending on how i want the text categorized. So I then have to click and re-select another colour which is time consuming. My Kindle reader always presents 4 colour when I am about to highlight which makes a big difference. Perhaps you can add a row to the floating menu with say the last 5 colours used or colours the user has selected that they know they might use.