Facebook videos start with black colors

[VYNARICOD]

Bug Information (visit the affected website → click the moon icon → "Send Feedback" → "Bug Report" → paste here)

• Site: facebook
• Theme: iceberg
• URL: https://www.facebook.com/
• Darkness Version: 2.0.22
• Browser: Chrome 73.0.3683.86
• Operating System: Windows 10
• Resolution: 1920x1080
• Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36

Bug Description When loading a video on facebook, mostly on live transmissions, the video will first load on an all black image with some outerlines of the image on diferent colors, and after a couple of seconds it will turn back to it's original image color.

Screenshots

[theme1256]

I can't replicate this.
I guess that it's a sideeffect of the way Facebook loads videos.
When a theme isn't enabled my guess is that it shows a white background, but you don't notice because it's inside another white element.