Color look different in Vivaldi and look correct in Edge
why? something with the color profile, but why Edge look correct and Vivaldi does not?
Try this thread https://forum.vivaldi.net/topic/21435/colors-on-vivaldi-look-horrible. Or try to search "color" in this forum for more ideas or tips.
Anyway, if you want to compare color (ICC profile engine), compare it with Chromium or GChrome. So, we can be sure it's only Vivaldi or Chromium. Edge had different engine to Chromium even to IE.