Arrowhead vs Ahwatukee
Unfortunately, it’s black and white. There is, according to Apple Support, a bug in macOS Sierra and/or the most recent version of iMovie on macOS Sierra that causes iMovie to mishandle certain video files such that those video files are washed over with the color red. It makes them completely un-watchable. Until that bug is fixed, the only reasonable-looking output is black and white.