Currently you can't directly apply effects on an Active system box, so the ability to change things like it's Alpha blending coefficient isn't possible...
Well, the weird thing that this object actually gets affected by the layer it's inside, meaning it will have the same effects as well.
Same alpha blending coefficient / RGB coefficient and ofc the main effect of the layer
That makes me think it's possible to add these for the object, unless they weren't added for a reason
But it would be very useful if adding these in a feature update won't cause many problems