For easy setup you can use the http://demo1.wprentals.org/ child theme with custom colors and then just edit the icons from css/css-images with FireWorks and then replace in the same location.
The child theme can be taken from “ALL FILES AND DOCUMENTATION” zip – which you unzip and then you go to demo_content folder. See the video below.
How to add the child theme with custom icons colors VIDEO
How to edit the purple icons and images:
These images are located in wprentals/css/css-images and wprentals/img
They must be edited with an image editor and replaced in the theme (same folder, same name). You can also replace them in child theme provided with the themepack.
Edit color in fireworks and save with the same name:
How to change images:
Replace icons and images directly in child theme you install and activate via FTP in wprentals-child/css/css-images and wprentals-child/img.