Color Constructor (Single, Single, Single, Single)

public Color(
	float red,
	float green,
	float blue,
	float alpha = 1f
)

Public Sub New ( 
	red As Single,
	green As Single,
	blue As Single,
	Optional alpha As Single = 1F
)

new : 
        red : float32 * 
        green : float32 * 
        blue : float32 * 
        ?alpha : float32 
(* Defaults:
        let _alpha = defaultArg alpha 1f
*)
-> Color