David Bromstad from My Lottery Dream Home and HGTV Smart Home designer Tiffany Brooks found their common ground in color. "Color is in our DNA," said Tiffany, and David agreed, "We don't do beige!"

Two Design Star alums (David took home the first season and Tiffany championed the last season) know what it takes to win a competition. For the Mystery Box Challenge, Chopped's Ted Allen presented the teams with chicken wire, faux leather, white tiles and Mason jars. Each team had to use the materials somewhere in their kitchen design.

David and Tiffany walked Rock the Block's host Ty Pennington through their strategy for the mostly blank slate kitchen and dining room. They had a fresh take that none of their competitors considered: flip the floor plan.

Though the space was big, Tiffany and David immediately wanted to flip the kitchen and dining room from the original plan, so that the rooms would feel more open and functional. They set an estimated budget for a $45,000 remodel.