Customize color and fonts in Infoway theme

Hello,
This is my first attempt at getting some assistance with your Infoway theme, and I am still in the process of building my website (aimhighhomeinspection.com), so it has not officially launched yet. I would like to change the accent color from the default orange, but when I use the color customization feature nothing seems to happen. I would also like to change the default font overall from the current serif font to a non-serif font (not real particular as to what), if possible. Thanks.