Purple and violet as the unspecified default

Being asked to propose a colour does not discharge this. A proposal is a question with a suggested answer, not a decision — so suggest one freely when asked, but ship the unbranded default alongside it and leave the brand file unchanged until a human confirms. Two agents given the same brief split on exactly this point, one deferring and one treating its own proposal as the answer, and both cited the same conflict-resolution clause to get there. The task can ask you for a recommendation; it cannot make you the one who decided.