slightly reduce contrast for lualine

lua/zenbones/shipwright/runners/lualine.lua

@@ -57,14 +57,16 @@ local function to_lualine(colors)
 	return { text }
 end
 
-local function specs_to_colors(specs)
+local function specs_to_colors(colorscheme)
+	local specs, background = unpack(colorscheme)
+	local da = background == "light" and -3 or 3
 	return {
 		common_fg = specs.Folded.fg,
 		inactive_bg = specs.StatusLineNC.bg,
 		inactive_fg = specs.StatusLineNC.fg,
-		normal_a_bg = specs.PmenuSbar.bg,
-		normal_b_bg = specs.PmenuSel.bg,
-		normal_c_bg = specs.StatusLine.bg,
+		normal_a_bg = specs.PmenuSbar.bg.abs_da(da),
+		normal_b_bg = specs.PmenuSel.bg.abs_da(da),
+		normal_c_bg = specs.StatusLine.bg.abs_da(da),
 		normal_c_fg = specs.StatusLine.fg,
 		insert_a_bg = specs.DiffText.bg,
 		command_a_bg = specs.Search.bg,
@@ -82,7 +84,7 @@ for _, ness in ipairs(ness_list) do
 		---@diagnostic disable: undefined-global
 		-- selene: allow(undefined_variable)
 		run(
-			specs,
+			{ specs, background },
 			specs_to_colors,
 			to_lualine,
 			{ prepend, "-- This file is auto-generated by shipwright.nvim" },