Added custom theme config

config/nvim/lua/user/highlights/init.lua

@@ -1,3 +1,3 @@
 return { -- this table overrides highlights in all themes
---  Normal = { bg = "#333333" },
+--  Normal = { bg = "#262626" },
 }

config/nvim/lua/user/plugins/astrotheme.lua

@@ -0,0 +1,43 @@
+return {
+  "AstroNvim/astrotheme",
+  config = function()
+    require("astrotheme").setup {
+      palette = "astrodark", -- String of the default palette to use when calling `:colorscheme astrotheme`
+
+      termguicolors = true, -- Bool value, toggles if termguicolors are set by AstroTheme.
+
+      terminal_color = true, -- Bool value, toggles if terminal_colors are set by AstroTheme.
+
+      plugin_default = "auto", -- Sets how all plugins will be loaded
+      -- "auto": Uses lazy / packer enabled plugins to load highlights.
+      -- true: Enables all plugins highlights.
+      -- false: Disables all plugins.
+
+      plugins = { -- Allows for individual plugin overides using plugin name and value from above.
+        ["bufferline.nvim"] = false,
+      },
+
+      palettes = {
+        global = {
+          -- Globaly accessible palettes, theme palettes take priority.
+        },
+        astrodark = {
+          -- Extend or modify astrodarks palette colors
+          base = "#1e1e1e", -- Overrides astrodarks red color
+          mantle = "#181818", -- Overrides astrodarks red color
+          crust = "#1f1f1f", -- Overrides astrodarks red color
+          surface0 = "#252525", -- Overrides astrodarks red color
+          surface1 = "#3e3e3e", -- Overrides astrodarks red color
+          overlay1 = "#2c2c2c", -- Overrides astrodarks red color
+        },
+      },
+
+      highlights = {
+        global = {
+          -- Add or modify hl groups globaly, theme specific hl groups take priority.
+        },
+        astrodark = {},
+      },
+    }
+  end,
+}