Printing Problem

I have an inexpensive all in one printer, scanner and copier from Lexmark. I just put in two new ink cartridges that I bought directly from Lexmark. I printed 20 business cards with a picture and they turned out beautifully. I also printed pages of text in black, that printed great. For some reason now the colors are not printing correctly. Green has been printing orange and dark purple comes out a light purple, yellow was perfect. Any ideas on what to do? Thanks for any help!