Swirled Whole Wheat Loaves

I'm working on a two-tone wheat loaf using Reinhart's Whole Grain Breads "100% Whole Wheat Sandwich Bread".  This was 2 recipes using King Arthur's whole wheat flour (and some cocoa powder for color) and white whole wheat flour. I divided each dough into 2 pieces and layered the white whole wheat and whole wheat doughs after rolling them out.  It's still a work in progress.