The latest generation of smartphones has included a range of new displays of varying resolutions and densities. While having access to higher quality displays is a good thing, it is bad when those with older screens don’t get to enjoy the same toys as those with newer screens. One such instance is the very popular Theme Chooser, which is included in CyanogenMod-based ROMs. The newer screen sizes often receive themes compatible with CM9, 10, and 10.1, but themers don’t always add in support for older resolutions. Now, Sony Xperia Arc and Arc S users can use a modified Theme Chooser that allow the use of themes for alternate resolutions.
XDA Senior Member dzolcp released a mod that makes HDPI and XHDPI themes work on the Xperia Arc and Arc S. The mod is not overly complicated, as it’s just a modified themechooser.apk and thememanager.apk. However, it allows users to apply HDPI and XHDPI themes as they would any normal theme, without having to tinker with their device’s DPI.
It should be noted that this is only for ROMs that already have Theme Chooser support. As per the norm, this won’t work on a stock Arc or Arc S ROM. As dzolcp explains:
this mod is just another theme chooser template and it will not work with any rom that not support T-Mobile Engine Theme Chooser
So if you’re running a ROM that has Theme Chooser and you want to flash some of the newer HDPI or XHDPI themes, this is the mod you’re looking for. For download links and install instructions, go to the original thread.