Try adding a wrapper component with the background color Green and putting all the other components in the wrapper.

Disregard. I thought you meant the tab itself. I see you mean the tab label now

If you give the tab a unique id you can do

li[data-tab="mytabid"] { background-color:green !important; }

Thanks Craig. That got me part way there. I am trying to get the button to go from #b2a2c7


to green. Suspect it has something to do with the a:

Here is the updated code that will work in Skuid verion 10.

.ui-tabs .ui-tabs-nav li[data-tab=“mytabid”]  {

    background-color:green

}