Form Personalization: How to set an item property dynamically

Is it possible to set the item property based on some condition?

For Example:

If PO header amount is less than $100, then that field should be displayed in Green, or else in Amber.

• This needs to be done through a single personalization only. (I know it could be achieved by multiple personalizations for each of the conditions)
• Looking for some options where we can check the conditions and set the property, may be by using a Builtin (Execute a procedure) or anything else.
• Something like this in "Form Personalization"-

IF (condition1) then 
   set_item_attribute.... 
ELSIF (condition2) then 
   set_item_attribute.... 
ELSE 
   set_item_attribute.... 
END IF