Sounds like a good idea. meanwhile you can do still change colors like i do. in your Windows 10 personalizations, the color settings you can change color of the taskbar which will also reflect on top bar of the programs too (including Edge).
Hi @franco27, we currently do not support the Chrome themes. We are still looking at possible supporting them in the future, but until then, as @HotCakeX points out, you can use the Windows 10 personalization settings to change the color of the window. I will take your feedback to the team that owns our theme story.