Fixing colabs

ImageColorizerColab.ipynb

@@ -221,7 +221,7 @@
    "outputs": [],
    "source": [
     "for i in range(5,46):\n",
-    "    colorizer.plot_transformed_image(source_path, render_factor=i, display_render_factor=True)"
+    "    colorizer.plot_transformed_image('test_images/image.png', render_factor=i, display_render_factor=True)"
    ]
   },
   {

VideoColorizerColab.ipynb

@@ -232,7 +232,7 @@
    "outputs": [],
    "source": [
     "for i in range(5,44):\n",
-    "    colorizer.vis.plot_transformed_image('video/bwframes/' + file_name + '/00001.jpg', render_factor=i, display_render_factor=True)"
+    "    colorizer.vis.plot_transformed_image('video/bwframes/video/00001.jpg', render_factor=i, display_render_factor=True)"
    ]
   },
   {