I love both the costume changes.
The turquoise (or whatever colour that is) is not a bright colour, but brings a very interesting subdued colour scheme to the RD. And Gaby fully in pink with Guillaume fully in maroon in the FD is just good and beautiful, very neutral and unspecific in the good way: space for your personal interpretation.
Both costumes are very simple, stylish, to the point, and still bring a different colour and costume image to the competition in comparison to most or all other teams.
They stand out with their costumes, and it's not for standing out. They are searching for different looks, not because they want to be different or remarkable, but to break the monotony and predictability of the costumes in Ice Dance.
I like many costumes and I find there is inventiveness, but I think there is still a majority of rather cliché choices. They can be very very beautiful, but Gaby and Guillaume are constantly looking to break out of patterns, find other things that still fit totally with what they present, but are not the first thing you come up with.
What's NOT the first idea? What will also work that is not your first thought? If we scrape away the self-evident choice, will we find others that will also be good and beautiful?
That constant search is what makes them so interesting.
Piper Gilles and Paul Poirier have also been inventive to find less downtrodden paths, they also tried to come up with other ideas and unconventional costumes and programs.
Somehow GG are more successful with it, in the sense that due to their better skating skills and in my not very humble opinion more artistically mature choices (it's difficult to talk about such things because they are so flimsy and subjective), they scored way higher and hence were more acknowledged and encouraged.
I'm repeating myself, but I have seen a lot of programs yesterday that I doubt would have been made like that if it hadn't been for GG.
At the end of 2013-14, weren't the FD's really very different, focussing on other aesthetics and moves? Constructed with a totally different outlook?
That's really something.
The most beautiful ice dance couple!!! 
