i'll keep this very breif,
Take a look at http://www.jmcsecurity.co.uk
Just make sure the logo blends in with the colour scheme, i.e white background.
However feel free to get creative by making use of CCTV product images within the logo, or back ground.
I'm simply looking for a professional looking design that fits in with the site.
Thank you and Good Luck
Just FYI, with regards colours, we use several colours on website including:
#333333 to #6e6e6e (dark gradient)
#ffa22a light orange
hope this helps with your designs.