What happened here? It used to be blue.
The primary colour has changed network wide it appears. The Ask a question button is orange on a selected site I just randomly tested, as was also pointed out by Animuson in the comments.
> When you're exposed to light in the nighttime, like when you spend a lot of time looking at your screens in the evening, your circadian rhythm can get out of sync. It may not signal to your body to produce melatonin, and you may have a harder time falling asleep, or waking up ready to start your day.