Background stage question

Hello Developers,
I normally use the stage colour as the background, but I want to change the colour of the background for one scene in a new IOS app I am coding.  This scene will have some objects that are animated.  I just want to use a solid colour.
Is the best way to do this is to use bitmaps of small dimensions (say 64 by 64) or to use small vectors shapes, from an efficiency standpoint?  I normally set the app with GPU mode and not Direct.
Any links or tips is most appreciated.
Thanks,
Justin

I believe that Flash takes the 100% sized version of the bitmap and sends that over to the GPU. The GPU then scales it to the desired size. One way we use that ability is with Retina graphics, we'll have a 1024 wide stage with a movieclip at 50% size, and inside is a bitmap that is 2048 wide. On Retina screens you get the full quality, not a doubled up 50% version.
As for redraws, you'll only get a hit if the symbol that was sent to the GPU changes. Your scaled or tiled background won't have changed, and so won't have to reload, even if things are moving around on top of it.
If you did tile a bitmap that would take up a little bit more RAM, but not more GPU memory. So, if it's a flat color backdrop it shouldn't matter whether it's scaled or tiled, and if the background has some texture, then a repeating tile would be the better option.
If you haven't played with it yet you should give Scout a try. One thing it can show you is which areas of the screen are having to be reloaded.
Adobe Scout on the App Store on iTunes
and
Free Scout CC | Download Adobe Scout free trial

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