Dear Gena,
I have the jello mold & the recipe you are looking for:

3 3/4 cups boiling water
1 pkg. (8oz serving size) red flavor gelatin
1 pkg. (8oz serving size) blue flavor gelatin
2 cups cold water
1 pkg. (4oz serving size) lemon flavor gelatin
1 pint vanilla ice cream or frozen yogurt, softened

STIR 1 1/2 cups boiling water into red (8oz serving size) and the blue gelatin
(8 oz serving size) in separate bowls until dissolved. Stir 1 cup cold water
into each bowl.

POUR red gelatin into USA mold. Refrigerate 1 hour or until set but not firm.
Reserve blue gelatin at room temp.

Meanwhile, STIR remaining 3/4 cup boiling water into lemon gelatin in bowl.
Spoon in 1 pint vanilla ice cream or frozen yogurt, softened, until melted.
Spoon over red gelatin in mold. Refrigerate 30 mins. or until set but not
firm. Refrigerate blue gelatin 30 mins.

SPOON blue gelatin over lemon gelatin in mold. Refrigerate 4 hrs. or overnight
until firm. Unmold