GIMP : Changing BG Color of a pretty complex image

Question

I want to replace the background color of a image [Attached below] with a lot of "stuff" in it. How will I go about doing this ?

I want to take out the white and replace it with Black.

Thanks In Advance !

Answer 1

Probably you can do it in many ways. Here below one:

• Open the image go on color, color to alpha; click.
• It opens a windows where should be just selected the white color.
  If the color selected is not the white one, click on the color and change it to ffffff.
• Now you have an image with a transparent background.
• On the left switch the background color to black. (you know if it is not black change the background color to black 000000).
• Now you can select from menu image and flatten image.

*** DONE ***

Of course if you use another color instead of black you can see it better :-)