Colour test for background for 3rd year project "The Boer"

I was given these three images as a moodboard and I had to make a colour pallete for "The Boer" shot 3 background (which i'll be doing next week). Alex (director of The Boer" gave me a lot of freedom on this but he specifically wanted it to be sun set and each colour had to have a hint of purple.

These are my colour tests. Once Alex has chosen one I will start doing the background.