A website is like a "window" into a room in your business. It can benefit from periodic reviews to determine if it is in synch with the current marketing ideas for your business.  If new graphics are now used in brochures and other marketing materials and definitely if the company logo is updated, the images on the website may need to be updated.

Sometimes we like to change the furniture arrangement in a room to make it more interesting. The same concept applies to your website "look and feel".  A new "coat of paint" including a new color theme to match the new logo, new images, and a slightly different layout contribute immensely to a new "look and feel".  Of course, the content may be the only change that should be made on a website to keep it up-to-date.