I found that you can customize the colors on your blog using the blogger tool:
FONTS AND COLORS, or you can add new colors that you want that aren't currently displayed in the blogger palette, by substituting the proper HTML code for the colors of your choice.
To find your perfect palette of colors just go to this site and pick your own :
This should work for any of the options listed in the Blogger menu. Hope you have some fun...it would really be interesting to see what some of you concoct.