add a basic default dark theme

config.toml

@@ -73,9 +73,16 @@ readme_files = ["README.md", "README"]
 # Currently does NOT support globbing or directories.  Each file must be listed
 # individually.
 #
+# Use "%TEMPLATE%" variable to substitute the path to the current
+# template folder.
+#
+# Use "%REPO%" variable to substitute the path to the currently
+# processing repository (only sensible when used as a per-repo
+# configuration).
+#
 # This can also be set per-repository, in which case the `repo_assets` output
 # directory is used.
-asset_files = ["templates/style.css"]
+asset_files = ["%TEMPLATE%/style.css"]
 
 # Whether to split history output into pages
 #
@@ -307,7 +314,7 @@ syntax_highlight_theme = "base16-ocean.light"
 #
 # All files with a .html extension found under this directory, and its
 # immediate children directories, are imported into the Tera template engine.
-path = "templates/"
+path = "templates/default_light/"
 
 # Template responsible for the list of repositories.
 #
@@ -545,7 +552,7 @@ generated_by_url = "https://git.trevorbentley.com/itsy-gitsy/"
 #limit_total_size       = 524288000
 #limit_context          = 200
 #limit_diffs            = 200
-#asset_files            = ["LICENSE"]
+#asset_files            = ["%REPO%/LICENSE"]
 #readme_files           = ["README.md", "README"]
 
 # An alternative way to specify the user-defined attributes.