Hi!
Seeing that I couldn't find any sunset graphics for GP3 I tried doing it by myself. There are some things to correct though, in some angles the sky looks weird and also one of the images is not in the correct order.
Please feel free to download the graphics and try them by yourself and If you see that there are any other things to correct or improve please let me know. Also let me know your opinion.

Here is the link to download:
[www.mediafire.com]

And this is the original image which I use to make the graphics:
[i.pinimg.com]

Saludos!