Rounds and converts values of an RGB object.

Direct port of TinyColor’s function, lightly simplified to maintain
consistency with TinyColor.

function wp_tinycolor_rgb_to_rgb( $rgb_color ) {
	return array(
		'r' => wp_tinycolor_bound01( $rgb_color['r'], 255 ) * 255,
		'g' => wp_tinycolor_bound01( $rgb_color['g'], 255 ) * 255,
		'b' => wp_tinycolor_bound01( $rgb_color['b'], 255 ) * 255,
	);
}