Add CSS variable

Need to build a CSS in variables for osc so we can change the look and feel from the admin panel. Need to create a place that the regular store owner can change the store look and feel need to be able to upload header image, change colors and fonts. With preview option. also general info box. ONLY BID IF YOU CAN START NOW!! ONLY BID IF YOU CAN WORK FULL TIME ONLY BID IF YOU CAN FINISH WITHIN 3 DAYS! ONLY BID IF YOU DID SIMILAR JOB BEFORE - SEND ME LINKS. We have projects all the time. Do a good job we will give you more work.