Set two different date range in PrimeNg Calendar

[geethu_jaison]

I am implementing Primeng calendar in Angular project. I need to set date range with color green and another date range with color blue. Here is my task.

I have a fixed number of days for free booking. Suppose I have 15 free booking days and a person select Day 1 to day 30 for booking, then the first 15 days should be in one color(green) and the other 15 should be in another color(blue).