Selected instance ALWAYS draw 'X' pixels outline around their shape ?

Hello All,

I found a much more appealing look to my selected objects which I drag and drop, resize, rotate, change Z-Order etc.. all over the screen.

So I know what I want it to look like I even have a working example (kind off..) but it's obviously not the best solution for what I'm trying to do and I'll explain why:

When the Mouse is over the "Created_Objects" (family that contain ALL OBJECTS the user will create) I want a 2 pixels colored outline to appear around the object.

So far so good, since my brain is just a simple logical one not like a programmer my first idea was to make extra animation for each object so it will have the 2 pixels around it on the same frame number.

The problems:

1 - Since each object contains 1 main animation with MANY VARIATIONS, each frame is a different variation.

I will need to DUPLICATE the animation, and every time I will add a new variation to the main animation I will have to manually duplicate it to the duplicate animation which I called: "Selected".

2 - I actually need to DRAW that line around each frame, or even if I use automatic filer to do it, it's a never-ending process because I'm about to keep adding more and more frames to the main animation.

3 - When Resize the instance, the MANUALLY DRAWN outline will also change it's size.

I would like the outline around the instance shape to stay the same amount of pixels ALWAYS.

So if it's 2 pixels, or 4, so I can choose and change it if I want.

4 - Duplicate each Animation and it's frame to the "Selected" Animation with same amount of frames but drawn with the Outline Edge will take DOUBLE the space which will make the software bigger and bigger as I'll keep update it.

The Question:

Is this possible to do with simple code? or it is very complicated and I rather

Maybe a specific Effect that can do this, I didn't found something beside BlurH and BlurV which isn't exactly what I'm looking for since it's... blurry, looks like glow unlike the SIMPLE effect I show on my example attached file.

What do you think? simple solution that even a noob like me can use? or waste of time to do in C3 without confusing code that I won't be able to follow (again, I'm not a programmer, just an animator).

DOWNLOAD - Not Finished EXAMPLE C3 File

Please share your ideas, suggestions, solutions.

Thanks ahead! :)