To edit the Look and Feel:
1. Select the green 'Brands' tab
2. Select 'Edit Brand' from the Actions menu
(Find the actions menu by hovering over the cog icon )
3. Set your Page header colours
You can choose the header text and background colours.
Note: It's a good idea to match the header colour to the background colour of your logo. Otherwise, the logo will sit in a box.
See here for a guide to finding the exact code of any colour on the web.
6. Set your Widget colours
Widgets are the individual blocks of content that appear within Pages.
You can choose the Header background colour, the Title text colour and the Link text colour.