public function setup_content_settings() {
		return [
			'grid_lines_color'				=> [
				'sanitize_callback'	   => 'sanitize_hex_color',
				'sanitize_js_callback' => 'maybe_hash_hex_color',
			],
			'grid_hover_color'				=> [
				'sanitize_callback'	   => 'sanitize_hex_color',
				'sanitize_js_callback' => 'maybe_hash_hex_color',
			],
			'grid_background_color_choice'	=> [
				'sanitize_callback'	   => 'sanitize_key',
				'sanitize_js_callback' => 'sanitize_key',
			],
			'grid_background_color'		   => [
				'sanitize_callback'	   => 'sanitize_hex_color',
				'sanitize_js_callback' => 'maybe_hash_hex_color',
			],
			'tooltip_background_color'		=> [
				'sanitize_callback'	   => 'sanitize_key',
				'sanitize_js_callback' => 'sanitize_key',
			],
			'days_of_week_color'			  => [
				'sanitize_callback'	   => 'sanitize_hex_color',
				'sanitize_js_callback' => 'maybe_hash_hex_color',
			],
			'date_marker_color'			   => [
				'sanitize_callback'	   => 'sanitize_hex_color',
				'sanitize_js_callback' => 'maybe_hash_hex_color',
			],
			'multiday_event_bar_color_choice' => [
				'sanitize_callback'	   => 'sanitize_key',
				'sanitize_js_callback' => 'sanitize_key',
			],
			'multiday_event_bar_color'		=> [
				'sanitize_callback'	   => 'sanitize_hex_color',
				'sanitize_js_callback' => 'maybe_hash_hex_color',
			]
		];
	}