1. Colour for Texts and background
Colour is a very important part of design, and it is not something that you can neglect if you want to get a roller banner that is going to display the massage for you. There is nothing to be gained by just picking any arbitrary colour for your design and just going with it!
A good colour scheme will help you stand out from the crowd, but will also be in line with your current corporate scheme, and not clash with your logo. Plus, you have to think about how readable your text will be on top of the colour background. Having bright yellow letters on a white background may be something that catches the eye, but unfortunately no one will be able to read it.
Choose simple colours such as Red, Darker Green, Blue or Black is the best solution for your poster printing. These colour contrast well and easily on any colour background.