Do I really need colors?

I don't know what I'm going to do in terms of colors.  The invitations have a pale green on them, but I don't know what I would pair with the green.  The colors I've liked so far are these:

As you can see, totally different color personalities.  The blue and pink seems feminine, romantic,   garden-y.  The garnet and tangerine seems lush, bold, summery, and also ethnic (Indian).  I really like the colors from the flowers page too, so I have NO IDEA what colors to choose!  Well, I guess it will fall into place.  I don't think I have to have green as part of color scheme even though it is on the invitation.