print was a little dark

Let me say that Sticker Mule does a great job. The shirt came earlier than expected, quality was good. However, the artwork was much darker than the original submitted and the proof. This was the cover of my first novel and I've experienced this before with printers. For some reason the red cape sometimes comes out near black and the background elements get lost in the black so I know it's not only Sticker Mule where I've had this happen. Otherwise, it woudl have been 5 stars all the way.