ms-access: check if font color is white

in开发者_如何学Go conditional formatting what would be the expression i would use to check whether a DIFFERENT textbox's font color is set to white?

With VBA, you can check whether a control's ForeColor property is white (vbWhite = 16777215).

If Me!SomeControl.Properties("ForeColor") = 16777215 Then

However, I'm lost trying to figure out how to apply that approach in conditional formatting.