This script can make your life a little bit easier by setting up the HDR lighting for Corona it will work with Corona 2 up to 5 or higher

Features:
-Create a camera from the viewport
-Set color saturation
-Set direction (0 to 360)
- Make HDR warmer or colder
- "Warmer and colder" function will work only in Corona 4 or higher

see the video of this script here:
https://www.youtube.com/watch?v=M1JIp9FPlLk 

my website:
www.mohseni.info