Function 'setTheme' has been deprecated

[gaiterjones]

Deprecated error in PHP 8 - Function 'setTheme' has been deprecated

			$c=new Colour();
			$c->setTheme(
				array(
					'header' => array('white', 'bg_blue'),
					'info' => array('black', 'bg_light_gray'),
					'success' => array('white', 'bg_green'),
					'error' => array('white', 'bg_red'),
				)
			);