TL;DR : display color on specific cells 
I want to display a month calendar view.
The use case is simple : the user needs to select dates.
I can select dates and add them to an array variable, that’s good.
Now, I want to show the user, what date are selected, by showing a specific color.
So far, i only see colors for click, current date, but not for another condition.
Can I do that ?