Confusing alignment guide lines

Basically, when you move a new object on the workspace, Balsamiq automatically shows guide lines as you move to help you align. Apperantly these guide lines are edges or center-split lines of existing objects.

The only problem is: I don't know which object is the reference I'm aligning to. When your diagram gets more and more objects, it's harder and harder to figure out the reference. Your new button "seems" to be centered in the window container, but you don't really know if that guide line is truly the center line of the window, or happens to be an edge of an irrelevant object, or a center line of another object on the far corner of the workspace.

Hopefully the attached screenshot helps explain my concern. I'm trying to make "new button" vertically centered in "container" but ended up with aligning it mistakenly to the center line of the "irrelevant object". Imagine when you get a real complicated diagram -- you won't even be able to tell what you are aligning to.

Is it possible to temporarily highlight the reference object along with the current guide line? Also, the guidelines need some intelligence -- when I place a control inside a container, relevant references should be used first, such as the container and other controls in the same container. Other objects are more likely to be irrelevant and they should be demoted in the reference queue.

My 2 cents. Thank you!