kickstart.nvim/lua/custom/plugins/shade.lua

return {
  "sunjon/Shade.nvim",
  config = function()
    require('shade').setup({
      overlay_opacity = 50,
      opacity_step = 1,
      keys = {
        -- brightness_up   = '<C-Up>',
        -- brightness_down = '<C-Down>',
        -- toggle          = '<Leader>s',
      }
    })
  end
}