_r.color
_r.color( element )
Convert something to a BABYLON.Color3.
_r.color("#ff0000");
_r.color({ r : 1, g : 0, b : 0 });
_r.color("red");
_r.color("rgb(255, 0, 0)");
_r.color([1, 0, 0]);
Color keywords list: red, green, blue, black, white, purple, magenta / pink, yellow, teal / cyan, gray / grey, random.