wxPython中的颜色设置

#!/usr/bin/env python 
import wx
import random
class MouseEventFrame(wx.Frame): 
    def __init__(self, parent, id): 
        wx.Frame.__init__(self, parent, id, 'Frame With Button',size=(300, 100)) 
        self.panel = wx.Panel(self)                             
        self.button = wx.Button(self.panel,label="Not Over", pos=(100, 15)) 
        self.Bind(wx.EVT_BUTTON, self.OnButtonClick,self.button)                    
        self.button.Bind(wx.EVT_ENTER_WINDOW,self.OnEnterWindow)             
        self.button.Bind(wx.EVT_LEAVE_WINDOW,self.OnLeaveWindow)
        
    def OnButtonClick(self, event): 
        '''
        两个交替变换的颜色
        '''
        #if self.panel.BackgroundColour == 'Green':
        #    self.panel.SetBackgroundColour('Red')
        #else:
        #    self.panel.SetBackgroundColour('Green')
        '''
        多个随机选择的颜色
        '''
        #self.panel.SetBackgroundColour(random.choice(['Green','Yellow','Grey','Red','White','Black']))
        '''
        随机选择所有颜色
        '''
        self.panel.SetBackgroundColour((random.randint(0,255),random.randint(0,255),random.randint(0,255)))
        self.panel.Refresh() 
        
    def OnEnterWindow(self, event): 
        self.button.SetLabel("Over Me!") 
        event.Skip() 
        
    def OnLeaveWindow(self, event): 
        self.button.SetLabel("Not Over") 
        event.Skip() 
if __name__ == '__main__':
    app = wx.PySimpleApp() 
    frame = MouseEventFrame(parent=None, id=-1)
    frame.Show() 
    app.MainLoop()