Minor changes to tokyodark nvim theme (visual highlight, remove italics)

src_files/.config/nvim/lua/plugins_lazy/themes.lua

@@ -4,11 +4,20 @@ return {
         lazy = false,
         priority = 1000,
         opts = {
-            custom_highlights = function(highlights, _palette)
+            custom_highlights = function(highlights, palette)
                 highlights.Comment['fg'] = "#8a9097"
                 highlights.LineNr['fg'] = "#8088A8"
+                highlights.Visual['bg'] = palette.bg4
                 return highlights
             end,
+            gamma = 0.92, -- brightness
+            styles = {
+                comments = { italic = true },
+                keywords = { italic = false },
+                identifiers = { italic = false },
+                functions = {},
+                variables = {},
+            },
         },
     },
     {