add color picker and better buttons

src/message.rs

@@ -1,12 +1,14 @@
+use iced::Color;
+
 #[derive(Debug, Clone)]
 pub enum Message {
     ButtonPressedIncrement,
     ButtonPressedDecrement,
+    ChangeNbPerSec(String),
     Tick,
     AddPolygon(String),
     ChangeTeta(usize, f32),
     Remove(usize),
-    ChangeColor(usize, String),
     ChangeSound(usize, String),
     ToggleSavePanel,
     Save,
@@ -21,4 +23,9 @@ pub enum Message {
     ChangeDeltaString(String),
     SlidePointLeft,
     SlidePointRight,
+    ChangeDegree(usize, String),
+
+    ChooseColor(usize, Color),
+    CancelColor(usize),
+    SubmitColor(usize),
 }