I have finally completed my 1st poster, inspired by the "Come Into The Factories" poster, illustrated by Phillip Zec in 1941. Below you can compare my updated version of this poster, and the orignal.
Im pretty chuffed with this, and after using the live trace tool in Illustrator CS4 to create this textured effect over the top of my poster I think I've succeeded in creating a poster to match what the brief asked of me.
Here is the colour palette I ended up selecting. It includes many shades from the original poster, along with the blue selected from the Vimeo logo. I've also included screen shots of the hexadecimal colour codes for each of them.