Decisions, Decisions

My good friend Pat over at Silver Thimble is starting another mystery quilt. ( I shouldn't even think about starting it since I haven't finished the last one, but I am)  We got the first mystery clue on Friday night.   This one listed the yardage and the first cutting instructions.  I really want to  do this, but I don't want to buy more fabric.  The clue calls for two fabrics or two color ways, one being a constant, with each fabric or color way needed a total of 5 yards.  Looking through my stash I found two combinations that I could live with.  The first is red and yellow, the second is pink and brown.  The clue also calls for colors with high contrast.  I could do the solid brown and scrap up the pink, I have lots of pink in my stash. If I decide to go with the red and yellow, it will just be those two colors.  What do you think?