I recently played a game where the scoring system gave away information to the players.
Game in question: foxer89 vs. PRHG
Both players assumed the black stone in the bottom right was dead, however we were given a warning that the pink squares needed to be filled. Even when the black stone was marked dead the pink squares and the warning remained.
It doesn’t seem to be possible to manually mark the pink squares as a particular colour. They did end up counting as white’s territory, but unless you manually counted, this was not clear until after the score was accepted.