SwiftKey beta navbar doesn't change color properly with a custom theme

I'm running SwiftKey beta version 7.2.6.24 and I created a custom theme to give me a true black keyboard using a plain black image for a background since you can't just pick a color. The current beta is supposed to be able to color the nav bar based on your keyboard, but when I use my custom one, I get a nasty grey color instead of true black (0,0,0). I think the simplest solution for custom keyboards would be to allow the user to select what color the nav bar should be to match their custom theme.