In the bowl of an electric mixer (or using a hand-held mixer) mix the almond paste until smooth. If paste is too thick add one egg. Mix until smooth. As you continue using the mixer, remember to scrape off the sides. Add the butter and mix until well combined. Add the almond or vanilla extract and mix again. Add one egg at a time, mixing in between. Add the flour and mix until combined and set aside. Preheat oven to 350 degrees.

Using four 1/8 metal sheet pans, spray with pastry spray and line pan with parchment paper. You could also use four 8 x 8 disposable aluminum pans, also spraying and lining pans. Take 4 bowls and pour equal amount of batter into each bowl. Add 2-3 drops of red coloring into one bowl and mix, add the green into another bowl, and yellow into the third bowl. Do not add any food coloring to the fourth bowl.

Pour one bowl of batter into one of the four pans. Place the pans into the oven and bake for 15 minutes. Check to see if it is done, by inserting a toothpick into center of the pan. Remove and let the cakes cool completely. Remove from pans. and place on parchment paper. Put 1 piece of parchment paper back into a pan. Place the plain (without food coloring) cake back into the sheet pan. Put a thin layer of the apricot preservers on the plain layer Add the green layer of cake and add the preserves . Add the yellow layer and also put the preserves on that. Top with the red layer. Do NOT add any preserves on top of this layer. Place in the freezer for about 30-35 minutes. Or cover the pan with plastic wrap and place one of the sheet pans over the wrap (to use like a cover). Place some weight onto the top and refrigerate for about 4-5 hours. You can use either method.

Place a large piece of parchment paper on a table or counter top. Remove the cake from the sheet pan, and trim the edges. Cut into 3 bars Space the bars. This is so that when the chocolate glaze is used, you can coat all sides.

In a double boiler, melt the chocolate chips. Let cool. Using a metal spatula, spread a thin layer of chocolate over the adding more chocolate to allow it to run down the sides. Smooth the chocolate all over the sides. Do the same with the other bars. When icing is hard, refrigerate for about 15 minutes. Remove from refrigerator and slice into 1/2 inch pieces.