 @param {value=255} the value for shutter at bottom end (optional, default 255)
* @param {color[?](icon0to5,!)=icon1} color for 'open' state e.g. 'icon0' through 'icon5' or '#f00' for red. Prepend a '!' to make the color constant ('!icon3'). Color is 'icon0' if window is closed and constant color is not forced. (optional)
*
* @author: raman
*/
{% macro skylight(id, item_value, item_window, min, max, color) %}
	{% if color is empty %}{% set color = ['icon0', 'icon1'] %}{% endif %}
	{% if color is not iterabl