When building my app, I started just using the Theme.Light.NoTitleBar.Fullscreen theme. I built all my layouts for the whole app like this, and got things to look how I want them. Some drawables used in the layouts have their size specifically set, and others are set to wrap\_content.

I then decided to switch to the Holo light theme. When I do this, all the drawables used in layouts that are set to wrap\_content end up larger. Almost as if they are pulling from a larger bucket. In fact, some look like they've been stretched. 

![Holo Based Theme](https://i.stack.imgur.com/fNLJE.png)

![Default PreHolo Theme](https://i.stack.imgur.com/H5WRp.png)

I know the background is black in the older theme one, but that's not an issue (this is actually a layout file that is included in another layout). Obviously there's quite a difference in size between the two.