How to remove blue color from status line

[nappalm]

I use Feline, I don't like the blue color, is it possible to disable the color in the status line?

[ful1e5]

You can override bg color in the Statusline highlight.

require('github-theme').setup({
 -- ...
 overrides = function(c)
   return {
     Statusline = { bg = c.bg, fg = c.fg_light },
   }
 end,
 dev = true,
})

Check palette module for overridable colors.