create constructors for VmcExtSettingColor

src/lib.rs

@@ -1480,7 +1480,7 @@ impl VmcExtOpt {
 }
 
 #[derive(Debug)]
-struct VmcExtSettingColor {
+pub struct VmcExtSettingColor {
     color: Color,
 }
 
@@ -1524,6 +1524,18 @@ impl VmcMessage for VmcExtSettingColor {
     }
 }
 
+impl VmcExtSettingColor {
+    pub fn new(color: Color) ->MsgNewResult<Self> {
+        Ok(Self{color})
+    }
+    pub fn new_vmc_message(color: Color) -> TraitMsgNewResult {
+        match Self::new(color) {
+            Ok(val) => Ok(Box::new(val)),
+            Err(val) => Err(val),
+        }
+    }
+}
+
 #[derive(Debug)]
 struct VmcExtSettingWin {
     is_top_most: bool,