old_contents: """
  * Copyright 2008 Google Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
  * use this file except in compliance with the License. You may obtain a copy of
  * the License at
  *
  * http:#www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  * License for the specific language governing permissions and limitations under
  * the License.
  """
  
  
  """*
  * Simple Wrapper specifying a color in RGB format.
  * Provides various methods for converting to String representations
  * of the specified color for easy compatibility with various APIs
  """
  class Color:
      
      """*
      * Create a using a valid CSSString.
      * We do not do any validation so be careful!
      """
      """*
      * Create a object with the specified RGB
      * values.
      *
      * @param r red value 0-255
      * @param g green value 0-255
      * @param b blue value 0-255
      """
      """*
      * Create a object with the specified RGBA
      * values.
      *
      * @param r red value 0-255
      * @param g green value 0-255
      * @param b blue value 0-255
      * @param a alpha channel value 0-1
      """
      def __init__(self, r, g=None, b=None, a=None):
          if g is None and b is None and a is None:
              self.colorStr = r
          elif a is None:
              self.colorStr = "rgb(" + r + "," + g + "," + b + ")"
          else:
              self.colorStr = "rgba(" + r + "," + g + "," + b + "," + a + ")"
      
      def toString(self):
          return self.colorStr
      
  
  
  """
  * Some basic color strings that are often used for the web.
  * Compiler should optimize these out if they are not used.
  """
  ALPHA_GREY = Color("rgba(0,0,0,0.3)")
  ALPHA_RED = Color("rgba(255,0,0,0.3)")
  BLACK = Color("#000000")
  BLUE = Color("#318ce0")
  BLUEVIOLET = Color("#8a2be2")
  CYAN = Color("#5fa2e0")
  GREEN = Color("#23ef24")
  GREY = Color("#a9a9a9")
  LIGHTGREY = Color("#eeeeee")
  ORANGE = Color("#f88247")
  PEACH = Color("#ffd393")
  PINK = Color("#ff00ff")
  RED = Color("#ff0000")
  SKY_BLUE = Color("#c6defa")
  WHITE = Color("#ffffff")
  YELLOW = Color("yellow")
  DARK_ORANGE = Color("#c44607")
  BRIGHT_ORANGE = Color("#fb5c0c")
  DARK_BLUE = Color("#0c6ac1")
  
  
new_contents: """
  * Copyright 2008 Google Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
  * use this file except in compliance with the License. You may obtain a copy of
  * the License at
  *
  * http:#www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  * License for the specific language governing permissions and limitations under
  * the License.
  """
  
  
  """*
  * Simple Wrapper specifying a color in RGB format.
  * Provides various methods for converting to String representations
  * of the specified color for easy compatibility with various APIs
  """
  class Color:
      
      """*
      * Create a using a valid CSSString.
      * We do not do any validation so be careful!
      """
      """*
      * Create a object with the specified RGB
      * values.
      *
      * @param r red value 0-255
      * @param g green value 0-255
      * @param b blue value 0-255
      """
      """*
      * Create a object with the specified RGBA
      * values.
      *
      * @param r red value 0-255
      * @param g green value 0-255
      * @param b blue value 0-255
      * @param a alpha channel value 0-1
      """
      def __init__(self, r, g=None, b=None, a=None):
          if g is None and b is None and a is None:
              self.colorStr = r
          elif a is None:
              self.colorStr = "rgb(%d,%d,%d)" % (r, g, b)
          else:
              self.colorStr = "rgba(%d,%d,%d,%d)" % (r, g, b, a)
      
      def toString(self):
          return self.colorStr
      
  
  
  """
  * Some basic color strings that are often used for the web.
  * Compiler should optimize these out if they are not used.
  """
  ALPHA_GREY = Color("rgba(0,0,0,0.3)")
  ALPHA_RED = Color("rgba(255,0,0,0.3)")
  BLACK = Color("#000000")
  BLUE = Color("#318ce0")
  BLUEVIOLET = Color("#8a2be2")
  CYAN = Color("#5fa2e0")
  GREEN = Color("#23ef24")
  GREY = Color("#a9a9a9")
  LIGHTGREY = Color("#eeeeee")
  ORANGE = Color("#f88247")
  PEACH = Color("#ffd393")
  PINK = Color("#ff00ff")
  RED = Color("#ff0000")
  SKY_BLUE = Color("#c6defa")
  WHITE = Color("#ffffff")
  YELLOW = Color("yellow")
  DARK_ORANGE = Color("#c44607")
  BRIGHT_ORANGE = Color("#fb5c0c")
  DARK_BLUE = Color("#0c6ac1")
  
  
subject: add GWTCanvas demo