android customization manager

I would like to customize my android app looks. The idea is following:

In web service I choose user and for that user I choose :
 - button background color
 - background color
 - font color 
 - what modules are available (tabs on/off in tabHost)

 etc ..

In my android app user start to login and开发者_Python百科 then download settings set in web services.

 (ButtonColor : red, BacgroundColor : black, Module1 : true..... etc.)

Now I want to apply that color to all my app activities.

Any idea how to achive that ?

I do little research and I could do what I want by XML style file, but I can't change XML attributes ( example button color) at runtime. I can change however theme at runtime, but in xml theme i still need to change hardcoded attributes at runtime to set color.

Thx for any help.

The short answer is that when you show the activity you can loop through all your controls and set the colors at that time.