add light theme to default_config (#5804)

docs/sample_config/default_config.nu

@@ -60,7 +60,7 @@ module completions {
     --no-show-forced-updates                      # Don't check if a branch is force-updated
     -4                                            # Use IPv4 addresses, ignore IPv6 addresses
     -6                                            # Use IPv6 addresses, ignore IPv4 addresses
-    --help                                        # Display this help message 
+    --help                                        # Display this help message
   ]
 
   # Check out git branches and files
@@ -144,7 +144,7 @@ use completions *
 
 # for more information on themes see
 # https://www.nushell.sh/book/coloring_and_theming.html
-let default_theme = {
+let dark_theme = {
     # color for nushell primitives
     separator: white
     leading_trailing_space_bg: { attr: n } # no fg, no bg, attr none effectively turns this off
@@ -195,13 +195,64 @@ let default_theme = {
     shape_nothing: light_cyan
 }
 
+let light_theme = {
+    # color for nushell primitives
+    separator: dark_gray
+    leading_trailing_space_bg: { attr: n } # no fg, no bg, attr none effectively turns this off
+    header: green_bold
+    empty: blue
+    bool: dark_gray
+    int: dark_gray
+    filesize: dark_gray
+    duration: dark_gray
+    date: dark_gray
+    range: dark_gray
+    float: dark_gray
+    string: dark_gray
+    nothing: dark_gray
+    binary: dark_gray
+    cellpath: dark_gray
+    row_index: green_bold
+    record: white
+    list: white
+    block: white
+    hints: dark_gray
+
+    # shapes are used to change the cli syntax highlighting
+    shape_garbage: { fg: "#FFFFFF" bg: "#FF0000" attr: b}
+    shape_binary: purple_bold
+    shape_bool: light_cyan
+    shape_int: purple_bold
+    shape_float: purple_bold
+    shape_range: yellow_bold
+    shape_internalcall: cyan_bold
+    shape_external: cyan
+    shape_externalarg: green_bold
+    shape_literal: blue
+    shape_operator: yellow
+    shape_signature: green_bold
+    shape_string: green
+    shape_string_interpolation: cyan_bold
+    shape_datetime: cyan_bold
+    shape_list: cyan_bold
+    shape_table: blue_bold
+    shape_record: cyan_bold
+    shape_block: blue_bold
+    shape_filepath: cyan
+    shape_globpattern: cyan_bold
+    shape_variable: purple
+    shape_flag: blue_bold
+    shape_custom: green
+    shape_nothing: light_cyan
+}
+
 # The default config record. This is where much of your global configuration is setup.
 let-env config = {
   filesize_metric: false
   table_mode: rounded # basic, compact, compact_double, light, thin, with_love, rounded, reinforced, heavy, none, other
   use_ls_colors: true
   rm_always_trash: false
-  color_config: $default_theme
+  color_config: $dark_theme   # if you want a light theme, replace `$dark_theme` to `$light_theme`
   use_grid_icons: true
   footer_mode: "25" # always, never, number_of_rows, auto
   quick_completions: true  # set this to false to prevent auto-selecting completions when only one remains