> Take the text away that usually specifies an action (like 'download', 'submit', 'buy now') and all you have is a rectangular coloured box. I guess that is th

> Take the text away that usually specifies an action (like 'download', 'submit', 'buy now') and all you have is a rectangular coloured box. I guess that is the part of the point, to have actionable text which describes what happens if you press the button.