Show current colour swatch in palette header

app/gui/color_picker.py

@@ -12,6 +12,7 @@ class ColorPickerMixin:
 
     ref_hue: float | None
     hue_span: float = 45.0  # degrees around the picked hue
+    selected_colour: tuple[int, int, int] | None = None
 
     def choose_color(self):
         rgb, hex_colour = colorchooser.askcolor(title="Farbe wählen")
@@ -23,6 +24,7 @@ class ColorPickerMixin:
         self.status.config(
             text=f"Farbe gewählt: {label} — Hue {hue_deg:.1f}°, S {sat_pct:.0f}%, V {val_pct:.0f}%"
         )
+        self._update_selected_colour(r, g, b)
 
     def apply_sample_colour(self, hex_colour: str, name: str | None = None) -> None:
         """Apply a predefined colour preset."""
@@ -39,6 +41,7 @@ class ColorPickerMixin:
                 f"Hue {hue_deg:.1f}°, S {sat_pct:.0f}%, V {val_pct:.0f}%"
             )
         )
+        self._update_selected_colour(*rgb)
 
     def enable_pick_mode(self):
         if self.preview_img is None:
@@ -67,6 +70,7 @@ class ColorPickerMixin:
         self.status.config(
             text=f"Farbe vom Bild gewählt: Hue {hue_deg:.1f}°, S {sat_pct:.0f}%, V {val_pct:.0f}%"
         )
+        self._update_selected_colour(r, g, b)
 
     def _apply_rgb_selection(self, r: int, g: int, b: int) -> tuple[float, float, float]:
         """Update slider ranges based on an RGB colour and return HSV summary."""
@@ -77,6 +81,15 @@ class ColorPickerMixin:
         self.update_preview()
         return hue_deg, s * 100.0, v * 100.0
 
+    def _update_selected_colour(self, r: int, g: int, b: int) -> None:
+        self.selected_colour = (r, g, b)
+        if hasattr(self, "current_colour_sw"):
+            hex_colour = f"#{r:02x}{g:02x}{b:02x}"
+            try:
+                self.current_colour_sw.configure(background=hex_colour)
+            except Exception:
+                pass
+
     def _set_slider_targets(self, hue_deg: float, saturation: float, value: float) -> None:
         span = getattr(self, "hue_span", 45.0)
         self.hue_min.set((hue_deg - span) % 360)

app/gui/ui.py

@@ -47,9 +47,18 @@ class UIBuilderMixin:
         self.status_default_text = self.status.cget("text")
         self._status_palette = {"fg": self.status.cget("foreground")}
 
-        palette_frame = ttk.Frame(self.root)
-        palette_frame.pack(fill=tk.X, padx=12, pady=(6, 8))
-        ttk.Label(palette_frame, text="Beispielfarben:").pack(side=tk.LEFT, padx=(0, 8))
+        palette_frame = ttk.Frame(self.root)
+        palette_frame.pack(fill=tk.X, padx=12, pady=(6, 8))
+        self.current_colour_sw = tk.Canvas(
+            palette_frame,
+            width=24,
+            height=24,
+            highlightthickness=0,
+            background="#f2c744",
+            bd=0,
+        )
+        self.current_colour_sw.pack(side=tk.LEFT, padx=(0, 8), pady=2)
+        ttk.Label(palette_frame, text="Aktuelle Farbe | Beispielfarben:").pack(side=tk.LEFT, padx=(0, 8))
         swatch_container = ttk.Frame(palette_frame)
         swatch_container.pack(side=tk.LEFT)
         for name, hex_code in self._preset_colours():