How do you...

How dya make the tect go like this:  It's made by Amy (butterstick_ ), and I would ask her but she's gone on holiday...

but anyway, do you know how she did the colouring of the text to be like that? Is it just a simple fill of two different colours, or is it something different? She made it in psp7, but I would like to know how to do it in PS6

thanx in advance...