Baby Shower Punch Blue

I have a question regarding Jello punch. I am wanting to make a blue punch for a Baby Shower?
…the blue because I want to float ducks on it as in a duck pond. The problem I am worried about is that the jello punch recipe calls for pineapple juice. Will the yellow pineapple juice make the blue jello/kool aid combo look green? The recipe calls for 1 pkg unsweet koolaid, 1 pkg jello in same color/flavor, one large can of pineapple juice and a 2 liter of ginger ale, sugar and water also. Suggestions, experience or another recipe would be appreciated!!
There is the perfect punch you may be looking for at allrecipes.com. They even show a picture with a floating duck and it looks like he is floating on a bubble bath. It serves up to 24. It is called Baby Blue Punch.
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