Gregory Maxwell wrote:
I don't know what software you're using, but this is trivial in gimp.
Create/open your transparent png. Set your gimp background color to the desired background color. Save the png, make sure that 'save background color' is checked and ''save color values from transparent pixels" is unchecked.
I tried fiddling with those checkboxes but that the currently selected background color would have any effect didn't occur to me. Thanks
Ruud