Replace highlight colors with prefixes and suffixes

doc/config

@@ -188,11 +188,18 @@
 #
 #song_library_format = {%n - }{%t}|{%f}
 #
-#
 #alternative_header_first_line_format = $b$1$aqqu$/a$9 {%t}|{%f} $1$atqq$/a$9$/b
 #
 #alternative_header_second_line_format = {{$4$b%a$/b$9}{ - $7%b$9}{ ($4%y$9)}}|{%D}
 #
+#current_item_prefix = $(yellow)$r
+#
+#current_item_suffix = $/r$(end)
+#
+#current_item_inactive_column_prefix = $(white)$r
+#
+#current_item_inactive_column_suffix = $/r$(end)
+#
 #now_playing_prefix = $b
 #
 #now_playing_suffix = $/b
@@ -519,8 +526,6 @@
 #
 #color2 = green
 #
-#main_window_highlight_color = yellow
-#
 #progressbar_color = black:b
 #
 #progressbar_elapsed_color = green:b
@@ -533,8 +538,6 @@
 #
 #alternative_ui_separator_color = black:b
 #
-#active_column_color = red
-#
 #window_border_color = green
 #
 #active_window_border = red