Hello Bavarianjude,
Welcome to the HP Forums!
I understand when you print a document, the colors are coming out too light. I will do my best to assist you! I would recommend following this HP document on Fixing Ink Streaks, Faded Prints, and Other Common Print Quality Problems.
Try "Cleaning the Printhead" a couple of times until it improves satisfactory quality. Also, make sure the ink cartridges are properly vented:
Correctly Vented Clogged Vent
Please post your results, as I will be looking forward to hearing from you.