Need a shader written $$PAID$$

Hi,

I'm a game design student and have an idea for a shader that I want to use on a project but alas I am an artist and not a very good programmer.

Here is what I am looking for:

I'm trying to figure out if it is possible to have objects display a different shader only where a spotlight is hitting them.

The idea is that the scene will be very dark, objects that are in the dark will use a dark purple toon shader with white outline. When ever one of the spotlights in my scene hits an object the illuminated area displays a normal shader like a simple diffuse.

I guess they can both be written into one shader and then have them blend between them where the light hits.

Any help would be appreciated and if you want to do it shoot me a pm with how much it'll cost me.

Thanks!