From a science-fiction development perspective I am looking for some plausible answer for the following:
What conditions (the more permanent, the better) would make for a bronze sky?
All the better, could we be currently creating those conditions?
For instance, the sky is typically blue based on the current conditions of our atmosphere and light. What conditions would make orange/brown appearance more prominent? Dull, lacking life.
Technically, a reddish-orange color would be acceptable too.
Either the sun itself or degenerate (or even natural) conditions can contribute to this.