One of the most important aspects of a website, is how it looks!
Most businesses nowadays have a logo, and based on that logo you usually determine the colours of your business.
If you don’t, then you really need to think about what image and colours you would like to have to represent your business on the internet?
I am not a graphic designer. I don’t ‘create’ graphics and logos, but I can ‘manipulate’ them to fit best into your website.
You should find someone (they’re called graphic designers) who can create your logo or image for you, and get them to design your online identity (I know some that I can highly recommend).
You (or the graphic designer) then send those graphics to me so I can “customise” the WordPress Theme that you decide to use, to incorporate your graphical identity.