Hot answers tagged themes
You cannot. The Cyanogen theming engine is specific to CM and derivative ROMs. Samsung stock ROMs have Touchwiz UI, which is a proprietary layer. Theming CM to look like Touchwiz, or creating mashups would be easier because of CM's open nature. Some carriers might give packs, like Sprint (source). You can install a different launcher and install themes on ...
Themes on Android are internal to apps: they're not user-accessible things. Replacing the theme of every app on your phone entails building a new custom ROM with your changes, and may cause some apps to behave oddly or appear wrong, because they're relying on details of the Holo themes. These days, even phone manufacturers can't replace the themes of ...
It is originally part of the T-Mobile theme engine, which is open source so you can implement in other roms, but you will need a rom that has it built in http://code.google.com/p/android-theme/wiki/TMobileThemeEngine
Short answer, you cannot, themeing features are specific to CyanogenMod, and if attempting to apply this on top of a Stock ROM, will either result in Force Closes, or boot-loops. You cannot have it both ways. Go down the CyanogenMod route and then the themeing will work, OR forget about it.
There are Holo themes available for the T-Mobile/CyanogenMod Theme Chooser. If you have the theme chooser you just download a Holo theme from the market select it. You can find out more about CyanogenMod (has the theme chooser built in) here.
Only top voted, non community-wiki answers of a minimum length are eligible