android - Load different colors based on conditions -

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i programming application contains layouts views. load these colors values/colors.xml. now, want define multiple themes application, e.g. blue , green (some sort of blue , green colors). question how can define 2 colors.xml file , load based on conditions or choosing user. want thing strings.xml can load strings based on locale defined.

thanks in advance. 

string.xml <?xml version="1.0" encoding="utf-8"?> <resources>  <string name="white">#ffffff</string> </resources>  values-fr/strings.xml <?xml version="1.0" encoding="utf-8"?> <resources>   <string name="white">#eeeeee</string> </resources>   button.setbackgroundcolor(integer.parseint(getstring(r.string.white)));

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