Real Tick

Does anyone know how to change the background color of a chart in Real Tick to a custom color as opposed to just the colors offered.

I seem to remember this option in the past and can't find it.

Thanks

 

right click on chart and you should see a menu for changing colors.

 

I see where you can change the background to one of the 25 or so colors Real Tick has ,but I seem to remember you could select a custom color by varying the hue.