Multi-Selection dynamic menus

Question

I'm looking to create dynamic menus with multiple options, and would allow multiple selections.

For example, mousing over an object (let's say a black circle of rad 1), a menu would popup at MousePosition[] with two options of "red" and "5". Selecting red would create a new circle, red with rad1, and selecting both would give a red circle of rad 5.

How would I create temporary/dynamic menus similar to the standard right-click (disappears after clicking away), except with multi-selection?

Edit: I got carried away with my end-goal example. All I am wondering is if Panel is the correct function to use here with multiple checkboxes (the documentation examples did not have what I expected).

Answer 1

Something like:

Panel@DynamicModule[{color = Gray, radius = 1, ww = {}},
Mouseover[
   Graphics[{Dynamic@color, Disk[{0, 0}, Dynamic@radius], Gray, Circle[{0, 0}, 3]}],
   Dynamic[Panel[CheckboxBar[
      Dynamic[ww, {(ww = #; radius = If[MemberQ[ww, 1], 2, 1]; 
              color = If[MemberQ[ww, 2], Red, Gray]) &}],
      {1 -> "radius = 2", Delimiter, 2 -> "color = Red"},
   Appearance -> "Vertical", Appearance -> Small]]],
   ImageSize -> All]]

Screenshots:

view when mouse is over the panel:

views when mouse is off the panel: