Crispety - I do see where colors make a difference with respect to product packaging and image.
I know that when a company wants to convey a clean image it tends to use colors like lime and would stay away from brown tones.
But I think that the company’s logo design has to be part of its brand marketing strategy as well because that is how consumers will recognize the brand.
There are many marketing strategy companies that actually help clients form a visible brand.
One company that comes to mind is Brand Identity Guru out of Boston. They reorganize a company’s marketing identity until it is a tight cohesive brand offering a basic message that the company wants to convey.