default color scheme: Make commands "normal" color

This makes the default colorscheme less colorful for two reasons:

1. It makes it a little less "angry fruit salad"
2. Some terminals (like Microsoft's Windows Terminal) have a terrible
blue default that contrasts badly against a black background

The alternative is to make *parameters* "normal" and give commands the
current parameter color (cyan). But I've seen cyan be quite blue and
quite green depending on the terminal, so I don't want to rely on it.

share/functions/__fish_config_interactive.fish

@@ -36,7 +36,7 @@ end" >$__fish_config_dir/config.fish
         # visible in whatever terminal setup.
         #
         __init_uvar fish_color_normal normal
-        __init_uvar fish_color_command blue
+        __init_uvar fish_color_command normal
         __init_uvar fish_color_param cyan
         __init_uvar fish_color_redirection cyan --bold
         __init_uvar fish_color_comment red

share/tools/web_config/themes/fish default.theme

@@ -4,7 +4,7 @@
 # visible in whatever terminal setup.
 
 fish_color_normal normal
-fish_color_command blue
+fish_color_command normal
 fish_color_quote yellow
 fish_color_redirection cyan --bold
 fish_color_end green
@@ -30,6 +30,6 @@ fish_pager_color_prefix normal --bold --underline
 fish_pager_color_progress brwhite --background=cyan
 fish_pager_color_selected_background -r
 fish_color_option cyan
-fish_color_keyword blue
+fish_color_keyword normal
 fish_color_host_remote yellow
 fish_color_status red