health and saftey possible posters

i have tried to create a simple poster to show the health and safety in a construction environmnet.

i have created 4 posters all with white backgrounds and they are all bland so i am going to try figure out a back ground colour that works or each individual poster.

the black background darkens the poster and dint make it as eye catching and i need the poster to be seen in the construction room as it is to make people aware in the work place. Although i do like how the colour stands out which i am also trying to do.