Field background color not changing on entering pin

[meets7]

I am unable to find a field which will let me set the background color after entry.

There is an entryBackgroundColour. But that sets the default background color.

Is there something similar to entryBorderColour and entryDefaultBorderColor?

[Fawxy]

Do you want to set the background on the currently editing field, or on any fields already filled?

[Fawxy]

I have adding a setting to change the background colour on the currently editing field, that behaves the same way as the border colour.

[meets7]

I was thinking of background color for an already filled field. Like in the attached image above, the background color of 5 (and not the 2nd circle).