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Store textview color

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I'm pretty new to Android development. Little by little I'm learning heaps of new things. After a few tutorials I'm making a program with al kinds of basic features so I know how to do it myself.

One of the features is changing the color of a textview (mWelcomeUser) by input of the user. When he/she pushes on the "SetColor" button, a dialog shows with different colors. This all works fine untill the orientation changes. I want to safe my color in onPause() and retrieve it in onResume(). The colorsettings are set in color.xml.

So If the user selects purple;

So the color isnt stored as an hex number to a variable. Thats what is giving me a hard time. If it was a hex value I could write that to an int (or a string) variable and retrieve it. But thats not the case here.
What should I do to make this works? It should be something like this (imo):

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