It would be so cool if you could change the colors directly in VS Code by just pointing to the pixel that you want to change. A color picker would pop up and the change would be applied immediately. (It would not only change the selected pixel but the entire color key)

Maybe with some machine learning the easy-to-compute function from colors -> VS Code UI Screenshots could be inversed, so that you know which color keys influence a certain pixel.

Sadly the color space is finite, otherwise the color key could be easily encoded in the color without changing the color much. Looking forward to high DPI CSS colors ;)