Question: I would like to set a red colour text in my app, but I don't know how.

Please provide references. Thanks.

Answer: 
Use the following in your `xml` where you want to change the color to red and by using the other hexacode of color you can change to any other color. This is an example to set the color to red:

```
android:textColor="#FF0000" 

```
Create a [custom style resource](http://developer.android.com/guide/topics/resources/style-resource.html) which uses an [Android Theme](https://github.com/android/platform_frameworks_base/blob/master/core/res/res/values/themes.xml) as a parent then override the text colors as defined in the Android theme.xml. Reference this new style in your [AndroidManifest.xml's application tag](http://developer.android.com/guide/topics/manifest/application-element.html#theme).