You will most likely want to change the colours to match your brand. All of the colour settings are within the CSS file for easy swap out.
To change your colours you can use this handy tool
Before making any edits, open the webpage linked to above and click on the ‘Choose file’ button, select the css.css file from the download package and then click on the ‘Load Data’ button.
You will then see this screen. Select your new colours to replace the existing colours and then click the ‘Generate’ button.
You will be given a new file with your own colours to download. Click the ‘Open CSS File’ button and copy the entire contents of that page to your clipboard.
You can then navigate to Appearance>Editor and in the style.css file paste the contents of your clipboard and save. Your layout will now be in your chosen colours.