Mosaic: Grey color for solved clues hard to differentiate from unsolved clues

[DoneWorkin]

I have trouble seeing the difference between the text colors when a clue number is changed from black/white to the grey color - so I will miss that a clue is still open or has been finished.

I suggest making the clue numbers bold by default and when solved they change to normal weight.

Another option would be to use a smaller font size for solved clues.
Another option would be to use a color (green perhaps) for solved clues.
Another option would be to use a color (your favorite color) for unsolved clues.

[DoneWorkin]

It looks like the upstream project just uses bold for all numbers and it looks like that provides more clarity - so perhaps making all the numbers bold would solve my issue.