Whisk together the orange juice with the tomato juice.
In a separate bowl, whisk the flours, baking soda and powder, cinnamon, and nutmeg,
Cream the butter, sugar & salt - about 4 minutes.
Beat in the zest and then the eggs one at a time.
Scrape down the sides of he bowl to make sure everything is incorporated.
Add the dry ingredients in thirds, alternating with the juice mixture.
Pour the dough into the prepared pan.
Bake 45 minutes. The cake is done when a knife inserted in the center comes out clean.
Let cool for 15 minutes, then turn out onto a wire rack and let cool completely.
Sift the powdered sugar.
Cream butter and cream cheese together.
Beat in the tomato paste, then add the remaining orange zest.
Slowly ad the powdered sugar.
Spread the frosting over the top of the cake.
Transfer to a serving plate. Cut & serve.