Use the colour wheel as the basis for a single colourfull illuration that could be tessellated across the wrapping paper? color theory chart - beautifully simply way to learn this (plus the fact that I suck at combining colors LOL!
Graphic Design - How Big Businesses Use Colors to Affect Your Emotions How does the color in your logo make your customers and prospects feel? Here's a look at the emotions certain colors elicit and iconic business logos that use those colors.
anna-vital: “ How To Think Visually Using Visual Analogies Most research in cognitive science explores how we see things but little research is done on how we understand what we see. Understanding is the ultimate test of how good your visualization.