Changing color around a field when filled

[Jaume]

I need a script that change the color of a rectangle made around a field box (or better the border of the field), when this field is filled. The reiterative message urging for that action becomes annoying when refers to a lot of fields. The idea is to see, when first open a form, ALL the fields whith a red rectangle, changing this rectangle to green when filled.

[Vaughan]

Not a script, a calculated container field.

You'll need to have the differently coloured rectangles in container fields somewhere: a prefs file is ideal for this. The calculation for each field background would then be:

If( isEmpty( Field1 ), Prefs::Red, Prefs::Green )