If the Flames decide to keep black on their uniforms, I hope the result will be similar to what Bastian Schmulling proposed a few years ago in his concept:
The best thing about it is that yellow and red really stand out - something that helps to distinguish us from teams such as Devils or Senators.
The white logo helps to improve the overall contrast as well. I just made the slight modification to the Bastian's concept by adding the new Flames shoulder patch ...