Its easy and effective to use the colours and textures of an image to colour text
(a picture is worth a thousand words)


1) Open your image
2) Type your copy and make sure that it resides as a layer below the image layer
3) Now place the cursor between the image and text layers press ALT and CLICK!
4) You now have an image coloured text
5) Layer > Flatten the image
6)Correct background layer (double click)
7) Select using magic wand to make transparent
8) Select > deselect to remove selection mask


HINTS: use fat fonts or at least BOLD the text  to take advantage of the image colouration