fixed color for text highlight

lua/setup/my_lspconfig.lua

@@ -79,13 +79,13 @@ local on_attach = function(client, bufnr)
 
   -- Set autocommands conditional on server_capabilities
   if client.server_capabilities.documentHighlightProvider then
+    local colors = require('gruvbox.palette')
     vim.api.nvim_set_hl(
       0,
       "LspReferenceText",
       { bold = true,
         ctermbg = 'red',
-        bg = 'DarkOrange',
-        fg = 'black' }
+        bg = colors.dark3 }
     )
     vim.api.nvim_set_hl(
       0,