Separate the soap base into two microwaveable bowls--1.3 pound in one bowl and 0.5 pound in the second. 

Place the bowl with the larger portion of soap into the microwave, and heat for 15 seconds, repeating until the soap is fully melted, but make sure not to boil the soap. 

Add a teaspoon of Gingerbread scented oil to the melted soap. 

Slowly add brown dye until you have a rich, golden brown like gingerbread. 

Melt the smaller portion of soap, then add a teaspoon of gingerbread scent and a small portion of dye to make it a lighter caramel color. 

Allow both soaps to cool until they are the consistency of cake batter. This will prevent them from combining while in the mold. 

Pour a small amount of each mixture into the mold, so the colors are layered side by side, until half of each has been placed in the mold. 

Slowly drag a butter knife through the soap to swirl them together. Make sure not to stir so as to combine the colors, just swirl. 

Allow the soap in the mold to cool completely.

Once this first layer of soap has cooled, reheat the remaining soap in 15-second increments. 

Allow the heated soap to cool to cake batter consistency, then pour over the first layer of soap in layers, as you did with the first layer.

Swirl a knife through the soap again. 

Allow the soap to cool overnight. 

Remove the soap from the mold and cut into bars.

Wrap each bar in plastic film to prevent glycerin dew.