I am using InDesign CS on a Windows XP platform. I am using InDesign to
mostly create documents for in-house marketing purposes (i.e.;
flyers, brochures, kit covers, table tents, etc.) Recently, it seems
half of all the new documents I create, print in grayscale. I am
creating all of the documents in the same manner (so much as I can
tell).

Help, I can't seem to find what could be the cause of this. I have
reset my color management options and printer options. I am printing
to an HP 4600 we purchased a few months ago. Does anyone have any
other ideas?

Jenni