Change Text Color based on condition

Ah, I see. The numeric field doesn't have any native support for changing colors conditionally. I would recommend creating a rich text field and using HTML to display whatever value is in "Total Items Fulfilled", you can the change the CSS of the HTML element dynamically when the condition is met.

I think this should work:

var text color = If( [Total Items Requested] = [Total Items Fufilled], "Green", [Total Items Fufilled] < [Total Items Requested], "Yellow", "" );

"<p style='color: " & $color & "'>" & [Total Items Fufilled] & "</p>"