Use set_color instead of hardcoded ansi (#8)

functions/cless.fish

@@ -1,20 +1,10 @@
-# colors documentation can be found at
-# http://www.lihaoyi.com/post/BuildyourownCommandLinewithANSIescapecodes.html#256-colors
 function cless -d "Configure less to colorize styled text using environment variables before executing a command that will use less"
-    set -l bold_ansi_code "\u001b[1m"
-    set -l underline_ansi_code "\u001b[4m"
-    set -l reversed_ansi_code "\u001b[7m"
-    set -l reset_ansi_code "\u001b[0m"
-    set -l teal_ansi_code "\u001b[38;5;31m"
-    set -l green_ansi_code "\u001b[38;5;70m"
-    set -l gold_ansi_code "\u001b[38;5;220m"
-
-    set -x LESS_TERMCAP_md (printf $bold_ansi_code$teal_ansi_code) # start bold
-    set -x LESS_TERMCAP_me (printf $reset_ansi_code) # end bold
-    set -x LESS_TERMCAP_us (printf $underline_ansi_code$green_ansi_code) # start underline
-    set -x LESS_TERMCAP_ue (printf $reset_ansi_code) # end underline
-    set -x LESS_TERMCAP_so (printf $reversed_ansi_code$gold_ansi_code) # start standout
-    set -x LESS_TERMCAP_se (printf $reset_ansi_code) # end standout
+    set -x LESS_TERMCAP_md (set_color --bold 0280A5) # start bold
+    set -x LESS_TERMCAP_me (set_color normal) # end bold
+    set -x LESS_TERMCAP_us (set_color --underline 5BA502) # start underline
+    set -x LESS_TERMCAP_ue (set_color normal) # end underline
+    set -x LESS_TERMCAP_so (set_color --reverse F0CB02) # start standout
+    set -x LESS_TERMCAP_se (set_color normal) # end standout
 
     $argv
-end
+end