Default color setting matches default RGB values

For color (hue) in range 0-100, to get RGB (0, 0, 1), we need to use 100 * 2/3 = 66.66

src/blocks/scratch3_pen.js

@@ -67,7 +67,7 @@ class Scratch3PenBlocks {
     static get DEFAULT_PEN_STATE () {
         return {
             penDown: false,
-            color: 33,
+            color: 66.66,
             saturation: 100,
             brightness: 100,
             transparency: 0,