GPL palette support; dedupe mock palette

src/mock.rs

@@ -91,4 +91,23 @@ pub(crate) mod palette {
             ],
         }
     }
+
+    pub(crate) fn soup11() -> Palette {
+        Palette {
+            name: "soup11".into(),
+            colours: vec![
+                Colour { red: 79, green: 30, blue: 69 },
+                Colour { red: 150, green: 48, blue: 87 },
+                Colour { red: 215, green: 68, blue: 89 },
+                Colour { red: 235, green: 112, blue: 96 },
+                Colour { red: 255, green: 179, blue: 131 },
+                Colour { red: 255, green: 255, blue: 255 },
+                Colour { red: 127, green: 227, blue: 187 },
+                Colour { red: 92, green: 187, blue: 196 },
+                Colour { red: 69, green: 126, blue: 163 },
+                Colour { red: 56, green: 66, blue: 118 },
+                Colour { red: 50, green: 36, blue: 81 }
+            ]
+        }
+    }
 }