We tried this cake recipe with orange extract as well (1 Tablespoon) rather than jello powder and it is very good also. The jello powder version that we are sharing today just had a bit more orange flavor, and was a touch softer as well (possibly because of the additional sugar in the jello.) We also use lime jello in our recipe for Margarita Cupcakes. We find that it is a good option for an additional boost of flavor when extracts are either difficult to find or not quite strong enough. Another option is to brush the outside with flavored simple syrups (as we did with our lemon bundt cake. You can do a variation of this for orange cakes and more.)