Colour possibilities

I'm really pleased with how the book covers have turned out so far:

These are just potential resolutions for now, as the type needs neatening up and I want to see what feedback I get in the upcoming crit. Obviously I still need to design for other aspects of the brief, so my action plan at the moment is:

• To work in more detail on the type in Illustrator
• To design the whole jacket, including the spine and back cover
• Think about the stock it's going to be printed on
• Produce promotional material for the book set release