diff --git a/docs/configuration.md b/docs/configuration.md
new file mode 100644
index 00000000..8faa529d
--- /dev/null
+++ b/docs/configuration.md
@@ -0,0 +1,48 @@
+# Configuration
+
+`gcalcli` supports configuration via a `config.toml` file, typically located at `~/.config/gcalcli/config.toml` (or `$XDG_CONFIG_HOME/gcalcli/config.toml`).
+
+## Structure
+
+The configuration is divided into sections:
+
+### `[auth]`
+
+Settings for authentication (Client ID).
+
+### `[calendars]`
+
+Settings for default and ignored calendars.
+
+### `[output]`
+
+Settings for output formatting (week start).
+
+### `[default]` (New)
+
+Set default values for global command-line flags.
+
+```toml
+[default]
+interactive = false  # Disable interactive prompts (simulates --yes)
+color = true         # Enable/Disable color
+conky = false        # Conky compatible output
+```
+
+## Example `config.toml`
+
+```toml
+[auth]
+client-id = "your-client-id.apps.googleusercontent.com"
+
+[calendars]
+default-calendars = ["Work", "Personal"]
+ignore-calendars = ["Holidays"]
+
+[output]
+week-start = "monday"
+
+[default]
+interactive = true
+color = true
+```
diff --git a/gcalcli/argparsers.py b/gcalcli/argparsers.py
index 023a338e..d4561bb0 100644
--- a/gcalcli/argparsers.py
+++ b/gcalcli/argparsers.py
@@ -502,7 +502,7 @@ def get_argument_parser():
         'interactively.',
     )
     delete.add_argument(
-        '--iamaexpert', action='store_true', help='Probably not'
+        '--iamaexpert', action='store_true', help='Legacy alias for --yes'
     )
 
     sub.add_parser(
diff --git a/gcalcli/cli.py b/gcalcli/cli.py
index 5f7ad1da..a9683d76 100755
--- a/gcalcli/cli.py
+++ b/gcalcli/cli.py
@@ -193,17 +193,16 @@ def main():
         opts_from_config = config.Config()
 
     namespace_from_config = opts_from_config.to_argparse_namespace()
-    # Pull week_start aside and set it manually after parse_known_args.
-    # TODO: Figure out why week_start from opts_from_config getting through.
-    week_start = namespace_from_config.week_start
-    namespace_from_config.week_start = None
+
+    # Apply config values as defaults for the parser.
+    # This allows config to override program defaults, while still letting
+    # explicit CLI arguments override config.
+    parser.set_defaults(**vars(namespace_from_config))
+
     if parsed_args.includeRc:
         argv = fromfile_args + argv
-    (parsed_args, unparsed) = parser.parse_known_args(
-        argv, namespace=namespace_from_config
-    )
-    if parsed_args.week_start is None:
-        parsed_args.week_start = week_start
+    (parsed_args, unparsed) = parser.parse_known_args(argv)
+
     if parsed_args.config_folder:
         parsed_args.config_folder = parsed_args.config_folder.expanduser()
 
diff --git a/gcalcli/config.py b/gcalcli/config.py
index 6181cb1e..68a5dcc3 100644
--- a/gcalcli/config.py
+++ b/gcalcli/config.py
@@ -70,6 +70,30 @@ class OutputSection(BaseModel):
     )
 
 
+class DefaultSection(BaseModel):
+    model_config = ConfigDict(
+        title='Default Global Options'
+    )
+    
+    interactive: bool = Field(
+        alias='interactive',
+        title='Enable interactive mode (default: true)',
+        default=True
+    )
+
+    color: bool = Field(
+        alias='color',
+        title='Enable color output (default: true)',
+        default=True
+    )
+    
+    conky: bool = Field(
+        alias='conky',
+        title='Enable conky color codes',
+        default=False
+    )
+
+
 class Config(BaseModel):
     """User configuration for gcalcli command-line tool.
 
@@ -84,6 +108,7 @@ class Config(BaseModel):
     auth: AuthSection = Field(default_factory=AuthSection)
     calendars: CalendarsSection = Field(default_factory=CalendarsSection)
     output: OutputSection = Field(default_factory=OutputSection)
+    default: DefaultSection = Field(default_factory=DefaultSection)
 
     @classmethod
     def from_toml(cls, config_file):
@@ -98,6 +123,8 @@ def to_argparse_namespace(self) -> argparse.Namespace:
             kwargs.update(vars(self.calendars))
         if self.output:
             kwargs.update(vars(self.output))
+        if self.default:
+            kwargs.update(vars(self.default))
         return argparse.Namespace(**kwargs)
 
     @classmethod