Workspaces not very readable when using white background

[pulkomandy]

I have set up my desktop to use a mostly white background.

I quickly noticed that workspaces adjusts itself to the workspace background color, which is nice. However, now the windows show as white on white, making it much less easy to identify used and unused workspaces in the replicant.

Maybe the window should use a grey shade in this case? Some other ideas?

[perelandra]

If the color goes below a certain lightness threshold (all R G and B values above 200?), get the grayscale equivalent of that color and darken it a few shades? Each workspace can have a different background color so this may result in different window colors in each workspace preview. Or just pick one mid-gray color if the background is light.

I have been contemplating a similar situation with the list view and how to implement correct shading for what I want to do with the Notifications preflet. Because some people like Humdinger like to change all the colors :-)