3. Button Styling — All Five Types
Applies to Standard, Minor Action, Important Action, Hero Action, and Add to Cart.
Square: 0px. Slightly rounded: 4px. Rounded: 20px, where numeric corner controls are supported.
Blank hex fields keep existing colors. Choosing a swatch fills its hex field.
Text and icons use the same requested color in each state.
Hover colors are separate from normal colors. Border widths, fonts, labels, links,
padding, and other settings remain unchanged.