how do i change the ui backround color?

[Stefanistkuhl]

I use Kitty as a terminal and have its background opacity turned down, but I don't want Lazygit to be fully transparent. I want it to have a set background color instead. The Catppuccin theme readme said it uses the terminal background color, but that isn't being applied. How can I override that in the Lazygit config?
Sorry if this is a stupid question and thanks in advance