Hi! I have a few things for you...
... I understand you're trying to portray a certain amount of professionalism into your business, and rightfully so... but there's a problem with that if you're trying to attract new customers.
It's tough for any professional, corporate company to build trust solely through the design of a web site. I agree the colors may help but the visitor needs to have an "experience" when they visit your site. You need to make a memorable impact on them. Studies show that you only have 3 seconds to capture a visitors attention before they decide whether or not to stay on the page.
I would suggest adding a video of you, or someone from your company, on your home page that lets visitors know that your company is real and there are real people who work there. People like dealing with people.
Hopefully this doesn't sound to harsh, I'm just giving you a different point of view!