Dissolve the red gelatin in 1 cup of boiling water, stirring until completely dissolved. Add 1 cup of cold water and mix well.
Pour the red gelatin mixture into clear cups, filling them about one-third full. Refrigerate for about 2 hours or until set.
Prepare the white layer by mixing 1 cup of whipped cream until smooth. Spoon the whipped cream over the red gelatin layer in each cup, filling them to about two-thirds full. Return to the refrigerator for another hour to set.
Dissolve the blue gelatin in 1 cup of boiling water, stirring until completely dissolved. Add 1 cup of cold water and mix well.
Carefully pour the blue gelatin over the white whipped cream layer in each cup, filling them to the top. Refrigerate for at least 2 more hours or until fully set.
Before serving, top each cup with a dollop of whipped cream and garnish with fresh blueberries and sliced strawberries.