astronvim_config/plugins/bufferline.lua

local colors = {
  red = "#d47d85",
  red_1 = "#ec5f67",
  grey = "#abb2bf",
  grey_1 = "#787e87",
  grey_2 = "#D3D3D3",
  black = "#1e222a",
  black_1 = "#252931",
  black_2 = "#2c323c",
  green = "#95be76",
  none = "NONE",
}

return {
  highlights = {
    background = {
      fg = colors.grey_1,
      bg = colors.black_2,
    },

    -- Buffers
    buffer_selected = {
      fg = colors.grey,
      bg = colors.black,
    },
    buffer_visible = {
      fg = colors.grey,
      bg = colors.black,
    },

    -- Diagnostics
    error = {
      fg = colors.red_1,
      bg = colors.red_1,
    },
    error_diagnostic = {
      fg = colors.red_1,
      bg = colors.red_1,
    },

    -- Close buttons
    close_button = {
      fg = colors.grey_1,
      bg = colors.black_2,
    },
    close_button_visible = {
      fg = colors.grey_2,
      bg = colors.black,
    },
    close_button_selected = {
      fg = colors.red,
      bg = colors.black,
    },
    fill = {
      fg = colors.grey_1,
      bg = colors.black_2,
    },
    indicator_selected = {
      fg = colors.black,
      bg = colors.black,
    },

    -- Modified
    modified = {
      fg = colors.red,
      bg = colors.black_2,
    },
    modified_visible = {
      fg = colors.grey,
      bg = colors.black,
    },
    modified_selected = {
      fg = colors.green,
      bg = colors.black,
    },

    -- Separators
    separator = {
      fg = colors.black_2,
      bg = colors.black_2,
    },
    separator_visible = {
      fg = colors.black,
      bg = colors.black,
    },
    separator_selected = {
      fg = colors.black_2,
      bg = colors.black_2,
    },

    -- Tabs
    tab = {
      fg = colors.grey,
      bg = colors.black,
    },
    tab_selected = {
      fg = colors.black,
      bg = colors.black,
    },
    tab_close = {
      fg = colors.black,
      bg = colors.black,
    },
  },
}