Heat.js - Documentation - Color Range

Type:	Name:	Description:
string	id	The unique identifier for this item.
string	name	The unique name for this item (optional).
number	minimum	The minimum count the date has reached before showing this items CSS class.
string	cssClassName	The CSS class name to apply to the day when the minimum value is met.
string	mapCssClassName	The override CSS class name to apply to the item in the "Map" view when the minimum value is met (optional).
string	chartCssClassName	The override CSS class name to apply to the item in the "Chart" view when the minimum value is met (optional).
string	statisticsCssClassName	The override CSS class name to apply to the item in the "Statistics" view when the minimum value is met (optional).
string	tooltipText	The tooltip text that should be shown for the item in the guide.
boolean	visible	States if the item should be shown in the views (defaults to true).