I believe this signage works because the different color portray different locations. The white space between each allows for clear reading.
I believe this sign works because the color contrast works. The smoke making an image of a gun portrays a clear message.
This works because it portrays a clear message. The idea of the baby with an oreo with drinking milk. Along with the letter spacing for the text on the bottom works.
This sign does not work because of the content. The content of alcohol and gun makes this sign extremely revolting. Lego is normally for kids so the idea of adult content should not be visible.
This sign does not work because when you think of red bull you think of it giving you wings. This revolting idea of bye bye eiffel tower does not give you any indication of an energy drink. Maybe power hungry instead.
I believe this is not a good design because of the grey background. It clashes with the white text which makes it a little difficult for it to read.