Colour Theory is when people immediately represent a colour with a feeling/emotion. For instance red symbolizes danger/anger/hate. If i had a red logo it could give the client a bad physiological impression of me therefore it would be more effective to use a lighter colour which represents peace/purity/positivity. Colour theory is recognized all around the world, however colours represent different emotions in different countries. In England red can means danger however in Japan it is a symbol of strength and courage. I made my logo in different colours so i could see not only which worked best, but which logo the most non threatening however strong and powerful. Choosing a colour for a logo is a important process.