Can anyone tell me why this bit of code does not change the background color of the label?

Label1.BackColor = Color.FromArgb(QBColor(Val(sender.tag)))

This line is executed from within an event procedure that is called when a button is clicked (it's actually a 4x4 matrix of buttons, each tagged with a number 0 to 15). I have viewed the result of the .FromArgb method in the debug window, and it returns the correct value for the corresponding QBColor, but for some reason it does not change the background color of the label. Am I missing something here (maybe using the Argb method incorrectly), is there another way of doing this, or ????????

--Steve
[email protected]