No, unfortunately this is not possible. Each player would get two games against all the other opponent's in their group, one with white and one with black. So in a thematic opening tournament the players would get an equal amount of games from both sides of the opening.
Tournament set-up
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ok thanks for the info
When setting up a tournament, can I make it so that players can only play one color? I want to set up sicilian dragon tournament, but players wpould end up on either side of the position. I'm only a premium member.