Bug: Setting color to highlight group causes component separators to disappear

[LandonSchropp]

Self Checks

• I'm using the latest lualine.
• I didn't find the issue in existing issues or PRs.

How to reproduce the problem

Using the minimal config below, open up Neovim.

Expected behaviour

The components in Lualine should be displayed with component separators.

Actual behaviour

The components are not displayed with separators.

Minimal config to reproduce the issue

call plug#begin("/Users/landon/.dotfiles/example/.local/share/nvim/plugged")

Plug 'nvim-lualine/lualine.nvim'

call plug#end()

lua << END

require'lualine'.setup {
  options = {
    component_separators = "|",
  },
  sections = {
    lualine_a = {},
    lualine_b = {},
    lualine_c = {
      { "filename", color = "Normal" },
      { "filename", color = "Normal" },
      { "filename", color = "Normal" },
      { "filename", color = "Normal" },
    },
    lualine_x = {},
    lualine_y = {},
    lualine_z = {},
  },
}

END