In DOAD, Hitomi's black tank top was reintroduced instead of the yellow from 3. Why is that? 5 and 6 never brought it back for some reason.

[WingZeroRequiem]

It would seem that white, black, and the recent green are the primary colors for her tank top and it would seem that the yellow is discarded for good. Would there be a problem within the consistency of canon once Itagaki left that allowed those colors to be her primary ones?