Okay so, when using paint I got the small pixelated animals link and copied the image URL and pasted it and the backround was black, so I saved the image and added it in and the backround was yellow but how do I get a different colour backround? Thank you!
If I understand the problem correctly, if you save the images you want to your computer before inserting them into paint it should have the transparent background.
I'm a GIMP user myself, and I'm not quite sure what you're asking. You need to download the image to your own computer, first of all, and then open up the image in GIMP. And a simple way to change the background color is to just use the bucket tool to fill in the area with the color (or GIMP pattern) you want.