The goal of this was to take something you would see an advertisement for daily and make it unrealistic. For the 1st advert a cow with hair was chosen for comic relief and not to be taken as a seriously.The dumber and different it looks the better chance is that the person seeing the advert will remember it easier and as a result profit.The color scheme for the 1st poster was meant to have that “classy” look with monochrome color choice.
The 2nd poster was even more stupid in terms of how it was portrayed. Because everything is in the sky the colors are bright and mostly shades of blue. The cooked chicken wings were a funnier version of using normal wings and letting the hairdryers fly in the sky , they are cooked supposedly to show that the dryers heat is so hot and that even with cooked wings angels are still able to fly.