I have added buttons for UltimateS Pro and one of its "sub-applications" to my toolbar. However, neither of those has an icon, so even though they're added to the toolbar they're invisible until/unless I mouse-over the location where they are on the toolbar. When the cursor is in the right position, they each become visible as a blank white square. I can click the blank square and launch the function, but... is there a way to create an icon for each button, so that they'll be visible on the toolbar even when I don't have the cursor right over them?