Marc by Marc Jacobs Ready-To-Wear Spring/Summer 2012 - key trend

bold use of colour from orange to navys and blacks, the colletion were geometric and graphic.

sleeveless sack dress in amped-up orange and shoes in red with black ankle straps

For men bright  nicely tailored suit in orange

Marc by Marc Jacobs's colour blocking in black and orange, thin ankle straps everywhere

Big bag in bright colors and olive green color mixed with orange and pink
with neutral sand color for the shoes

that's it, very classy!
credit to pics gq