Color swatches have space for label textbox under them, height of which is non-customizable and clickable. This may cause confusion when clicking on space under color swatch, especially when another color swatch is under. It also doesn't allow to place other controls closely under color swatches using positive top_pads (and negative would look confusing for people who'll later edit the xml and isn't good anyway). This was encountered while working on
STORM-583, and to make "Colors" panel according to design, topmost color swatch has to be close to controls that are under him. That's where I encountered that invisible label problem.
TODO: This label's height should be customizable via xml.