This button does not appear grayed-out when disabled. It is disabled, but the text color does not change. How do I do that?

UPDATE: I should add that the Disabl_Color is not the color being displayed if the WHEN condition is false.

	* JJ - 04/25/2008 - Project RelayHealth Eligibility Interface: Added Eligibility Button
	@ ( sch_disp + 0.75 ) * row_incr, 86 GET x_eligibility ;
		FONT "Arial", 9 ;
		STYLE "B" ;
		FUNCTION '*NH Elig' ;
		SIZE Sched_But_Height, 7 ;
	COLOR ,,,,,,,,&Control_Color,&Disabl_Color ;
		VALID v_Eligibility('DailyBatch') ;
		WHEN m_uppad18 OR m_rainman ;
		DEFAULT 0