add special_files option

README.md

@@ -37,6 +37,7 @@ let g:nvim_tree_hijack_netrw = 0 "1 by default, prevents netrw from automaticall
 let g:nvim_tree_add_trailing = 1 "0 by default, append a trailing slash to folder names
 let g:nvim_tree_group_empty = 1 " 0 by default, compact folders that only contain a single folder into one node in the file tree
 let g:nvim_tree_lsp_diagnostics = 1 "0 by default, will show lsp diagnostics in the signcolumn. See :help nvim_tree_lsp_diagnostics
+let g:nvim_tree_special_files = [ 'README.md', 'Makefile', 'MAKEFILE' ] " List of filenames that gets highlighted with NvimTreeSpecialFile
 let g:nvim_tree_show_icons = {
     \ 'git': 1,
     \ 'folders': 0,

doc/nvim-tree-lua.txt

@@ -231,6 +231,20 @@ Can be 0 or 1. When 1, will show nvim-lsp diagnostics in the signcolumn
 of the tree highlighted by diagnostic severity.
 Code will be executed on `LspDiagnosticsChanged`. 0 by default.
 
+|g:nvim_tree_special_files|                    *g:nvim_tree_special_files*
+
+A list of filenames that gets highlighted with `NvimTreeSpecialFile`.
+default table is
+
+>
+    {
+      ["Cargo.toml"] = true,
+      Makefile = true,
+      ["README.md"] = true,
+      ["readme.md"] = true,
+   }
+<
+
 ==============================================================================
 INFORMATIONS				        *nvim-tree-info*
 

lua/nvim-tree/renderer.lua

@@ -220,7 +220,7 @@ local picture = {
   gif = true,
 }
 
-local special = {
+local special = vim.g.nvim_tree_special_files or {
   ["Cargo.toml"] = true,
   Makefile = true,
   ["README.md"] = true,