Adjust color settings; use get() consistently

lua/highlite/colorscheme.lua

@@ -3,7 +3,10 @@
 -- Clear the highlighting.
 vim.cmd('hi clear')
 
+-- Set the background to dark.
 vim.o.background = 'dark'
+
+-- Disable automatic coloring for the IndentGuides plugin.
 vim.g.indent_guides_auto_colors = 0
 
 -- If the syntax has been enabled, reset it.
@@ -12,7 +15,7 @@ if vim.fn.exists('syntax_on') then vim.cmd('syntax reset') end
 -- Determine which set of colors to use.
 local use_hex_and_256 = string.find(vim.fn.expand('$TERM'), '256')
 	or vim.g.t_Co >= 256
-	or vim.fn.has("gui_running")
+	or vim.fn.has('gui_running')
 
 -- If we aren't using the hex and 256 colorset, then set the &t_Co variable to 16.
 if not use_hex_and_256 then vim.g.t_Co = 16 end
@@ -102,6 +105,6 @@ return function(name, Normal, highlights, terminal_ansi_colors)
 
 	-- Set the terminal colors.
 	for index, color in ipairs(terminal_ansi_colors) do
-		vim.g['terminal_color_' .. index] = color[HEX]
+		vim.g['terminal_color_' .. index] = get(color, HEX)
 	end
 end

lua/highlite/init.lua

@@ -202,7 +202,7 @@ local highlights = {
 	Float     = {link='Number'                              },
 
 	--[[ 4.1.2. Identifiers]]
-	Identifier = {bg=NONE, fg=white,  style=NONE},
+	Identifier = {bg=NONE, fg=FG,     style=NONE},
 	Function   = {bg=NONE, fg=purple, style=NONE},
 
 	--[[ 4.1.3. Syntax]]
@@ -232,7 +232,7 @@ local highlights = {
 	SpecialChar    = {link='Character'                                           },
 	SpecialKey     = {link='Character'                                           },
 	Tag            = {link='Underlined'                                          },
-	Delimiter      = {link='Normal'                                              },
+	Delimiter      = {bg=NONE,           fg=white,    style=NONE                 },
 	SpecialComment = {bg=NONE,           fg=gray,     style={'bold', 'nocombine'}},
 	Debug          = {link='WarningMsg'                                          },