Key Lime Pie

• 9 pie shell (baked)
• 4 egg whites
• 4 egg yolks
• 1 few drops green food colorin
• 240 ml cream whipped (heavy)
• 200 gr sugar
• 120 ml lime juice
• 60 ml water
• 18 gr gelatin (unflavored)
• 2 gr lime peel (grated)