It was a nice day for a drive and after passing by field after field decided to stop and take a photo. The contrasting colours was spectacular. I think lines you refer to are power. I never actually noticed them when I was there to be honest. The cloud turned into rain the further southeast I got and it's still bucketing down @insaneworks
Here's anther pic from today. These are the wheat silos at Coonalpyn. See the artwork? These silos are immense...The artist used local school kids as the models then painted them on the silos.
The colors and the contrast in those blue and yellow photos really are impressive. And what a gorgeous peace of work you fond! A genius idea.
So that's why the clouds were hanging so low. They were heavy with rain and snatching some power from the people. :D