I saw this again last night, and it occurred to me that, instead of showing Kevin Costner breaking off the "Colored Women's Restroom" sign, they should have shown him breaking off the "White Women's Restroom" sign. Or perhaps both signs. It's implied, sure, with the "At NASA, we all pee the same color" statement, but I think it would have been more effective if we (and all the characters) saw him break the barrier in the main buildings.