color

[dennishmiller] "I have a number of spheres linked in an Array. Is there any way to texture or color them separately"

Since the array is multiple instances of one object there is no way to color them seperately unless you make the array editable... But you can put a texture on the array has a range of colors. A gradient with as many colors as you have objects in the array with a 2D-U (or whatever direction works for your array).

[dennishmiller] "how might I go about using random colors on particles coming from either an emitter or TP"

Possibly with Xpresso on TP particles.