Default constructor.
Constructs an opaque black color. It is equivalent to Color(0, 0, 0, 255)
Color(0, 0, 0, 255)
Construct the color from its 4 RGBA components.
Alpha (opacity) component (in the range [0, 255])
Blue component (in the range [0, 255])
Green component (in the range [0, 255])
Red component (in the range [0, 255])