Oracle Forms

I have multi row block in Enter Query mode . I want to change current item background color. I have put when-new-items-instance trig at form level; code is Set_Item_instance_Property(:SYSTEM.CURRENT_ITEM, CURRENT_RECORD, VISUAL_ATTRIBUTE, 'VA_GREEN'); and post-text-item trig as
Set_Item_instance_Property(:SYSTEM.CURRENT_ITEM, CURRENT_RECORD, VISUAL_ATTRIBUTE, 'VA_WHITE');
This works when form is under query executing mode (after I press F8)..

But at the time of entering query criteria all navigated items change to VA_GREEN.
How to arrest this ??
I am using Forms 6i