Hi.
For my accordions, I use theme="Accent Lines" color="green". But theme="Accent Lines" color="lightgreen" (it's just an example) does not work.
It should be nice to use the exadecimal code to colorize the border-top of each panel: theme="Accent Lines" color="#91d100". Can you make it possible?
The "green" is not a color, but a name used in the css to style it the way you want.
You can't just give it a single color, as the styling has different colors based on the state.