add select tool

src/kiri/widget.js

@@ -477,10 +477,15 @@ console.log/** Copyright Stewart Allen <sa@grid.space> -- All Rights Reserved */
         if (Array.isArray(color)) {
             color = color[this.getExtruder(settings) % color.length];
         }
+        this.color = color;
         let material = this.mesh.material;
         material.color.set(color);
     };
 
+    PRO.getColor = function() {
+        return this.color;
+    };
+
     /**
      * @param {number} value
      */