Handle set colors exceptions

kitty/boss.py

@@ -1875,7 +1875,11 @@ class Boss:
         except (Exception, SystemExit) as err:
             self.show_error('Invalid set_colors mapping', str(err))
             return
-        payload = c.message_to_kitty(parse_rc_args([])[0], opts, items)
+        try:
+            payload = c.message_to_kitty(parse_rc_args([])[0], opts, items)
+        except (Exception, SystemExit) as err:
+            self.show_error('Failed to set colors', str(err))
+            return
         c.response_from_kitty(self, self.active_window, PayloadGetter(c, payload if isinstance(payload, dict) else {}))
 
     def _move_window_to(

kitty/rc/set_colors.py

@@ -5,6 +5,7 @@
 import os
 from typing import TYPE_CHECKING, Dict, Iterable, Optional
 
+from kitty.cli import emph
 from kitty.config import parse_config
 from kitty.fast_data_types import patch_color_profiles, Color
 
@@ -95,6 +96,8 @@ this option, any color arguments are ignored and --configured and --all are impl
         if not opts.reset:
             try:
                 final_colors = parse_colors(args)
+            except FileNotFoundError as err:
+                raise ParsingOfArgsFailed(f'The colors configuration file {emph(err.filename)} was not found.') from err
             except Exception as err:
                 raise ParsingOfArgsFailed(str(err)) from err
         ans = {