wxpython- Color on Bitmap on toolbar not appearing

Question

def createColorTool(self, toolbar, color):
  bmp = self.MakeBitmap(color)
  newId = wx.NewId()
  label=''
  tool = toolbar.AddRadioTool(newId, label,bmp, shortHelp=color)
  self.Bind(wx.EVT_MENU, self.OnColor, tool)
 def MakeBitmap(self, color):
  bmp= wx.EmptyBitmap(16, 15)
  
  dc = wx.MemoryDC()
  dc.SelectObject(bmp)
  
  dc.SetBackground(wx.Brush(color))
  
  dc.SelectObject(wx.NullBitmap)
  return bmp

The color attribute takes in color from a list of colors {'black', 'blue', 'green'} the problem is program is working fine but for bitmap, in the toolbar, only black color is being displayed not any other color as specified in the list for the choose color option. You can see the image here of how the code is working

Answer 1

I get lost with DC manipulation, so here's an alternative.
This assumes that color is a wx.Colour e.g. wx.Colour(0, 155, 255, alpha=255)

def MakeBitmap(self, color):
    bmp = wx.Bitmap.FromRGBA(16, 15, color.red, color.green, color.blue, color.alpha)
    return bmp

Creates the Green square below

Edit: Your code sets the background brush but doesn't use it.
So you are returning the bare bones bitmap.

If you must use a dc try the following:

def MakeBitmap(self, color):
    bmp = wx.Bitmap(16, 15)
    dc = wx.MemoryDC(bmp)
    dc.SetBackground(wx.Brush(color))
    dc.Clear()
    return bmp

or:

def MakeBitmap(self, color):
    bmp= wx.Bitmap(16, 15)
    dc = wx.MemoryDC()
    dc.SelectObject(bmp)
    dc.SetBackground(wx.Brush(color))
    dc.Clear()
    return bmp 

Clear(self) Clears the device context using the current background brush.