Can I make chocolate frosting out of a plain cream cheese frosting

Well, I guess it is too late now, but maybe for next time:

Chocolate buttercream frosting is INSANELY easy to make, & instead of buying frosting next time, just get some powdered sugar. Melt approx. 1/4 cup of butter. Add 3/4 cup of powdered sugar & 1/4 cup of cocoa (sifting it is best). Mix well, then add 1/4 cup of milk. Add enough powdered sugar to make it into frosting consistency, & there u go.

If u do not have powdered sugar, then melt 2 cups of chocolate chips in the microwave with 1/4 cup of butter & 1/4 cup of milk. When the chips r pretty soft, but u can still see the shapes, mix it together -- the chips should melt as u mix, or u can pop them back in the microwave for a few seconds. Pour this on top of the cake, right in the middle. It should spread out & drip down the sides, making a lovely & very classy chocolate glaze. Chill the cake (a cool room will work), & if u have some fruit, serve some fruit on top (strawberries, yum!).

milescc.answer will probably work....even though he does not know how to spell Chef..if that is his profession...or maybe he really is a Chief (Indian).

I would think adding any kind of chocolate would be okay. If you have Baker is chocolate or semi-sweet chips, you could melt them and mix it in. If you use cocoa powder, you might need to add a little milk to get the consistency right. But chocolate-cream cheese frosting sounds really good.

add 1/4 cup sugar and 1/8 cup unsweetened coco powder

just add cocoa power

google it.
i've found many good recipes on google.