I changed the background color for tabpanel by overriding .rf-tab-cnt
.rf-tab-cnt {
background-color: #e6e7d5;
}
This works fine when the page loads the first time, if I click on the another tab within the panel, the background color defaults back to white, I also lose the background color when I click back to the tab that rendered the right background color on initial display.
Any help appreciated.