OESetSurfaceColor

OESetSurfaceColor(surf: OESurface, r: float, g: float, b: float,
                  a: float = 1.0) -> bool
OESetSurfaceColor(surf: OESurface, r: str, g: str, b: str,
                  a: str = 255) -> bool

Sets the color of the entire surface to the specified color.