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

Please provide references. Thanks.

Answer: 
Read the docs for `TextView`, specifically for [`textColor`](http://developer.android.com/reference/android/widget/TextView.html#attr_android%3atextColor).
Use this in your layout:

```
<TextView>
  ....
  textColor="red"
  ....
</TextView>

```