I've always tended to use a background colour (e.g. light yellow) to highlight a field currently selected.
I also use this for validation, so that when a field is exited, if the field value is invalid, it makes the background light red, or light green for a valid input.
I've always tended to use a background colour (e.g. light yellow) to highlight a field currently selected.
I also use this for validation, so that when a field is exited, if the field value is invalid, it makes the background light red, or light green for a valid input.