how to cosplay as smurfs easily?

i am sure that many people are familar with smurfs, they are very cute and live in the mashrooms. and their skin color is blue, which makes them really special. so some people like to cosplay as the smurfs for the parties, events or comic con. and the halloween day is coming soon this year, i guess that some people will still choose to cosplay as the smurfs in this halloween party. and most of people will choose to paint on their body, usually, it will cost people a lot of time to paint and later clean themselves, then i think it is not a good choice. then how could we cosplay as smurfs easily?
look at the three people in the picture, they are playing as the smurfs. how do you think about their smurf costumes? i think they made their costumes by theirselves. they put their efforts in their costumes, but i have to say that their costumes are not that good, because their blue suits are not tight enough to be their second skin. however, their idea is awsome, choosing the blue suit as the second skin, then they don't have to spend much time to paint on the body and then clean. but all they needed is a tight suit, such as the zentai suit that could be tight enough to be the second skin. then these smurf costumes would be perfect.