[Feature Request] Highlight the value cell

[ngocanhtve]

Dear,

In the picture I am choosing value 4. But in dark theme mode it seems very difficult to distinguish which value has been selected.

If the border is filled with white like the row of function cells below, it will be easier to distinguish. Or any coloring method that helps the value numbers stand out more is fine. Or you can turn it into a circle when selected instead of a square as now, it will be very good.

Thank you!