First off, the Flip Flop hat is totally the wrong colours. According to the Super Top Secret No CM person will see this post:
It's actually just one
dresshat, which will become more obvious in better lighting.
Now the colour choices are totally wrong. If Flip Flop is supposed to be modelled off the colours of the infamous dress, then there is a popular colour combination still missing. To the eyes of some people, it was not Blue and Black and it was not White and Gold. It was... Purple and Brown! For those of you who think I am ridiculously, there is this comment on Meta Stack Overflow that has 9 up votes. These people seem to support that the dress was really purple and brown.
At least make it random rainbow coloured :)