>>5413858I used GIMP. I started off with a soft pinkish gradient. I made a circle selection, inverted it, then messed with the lightness and saturation. Then I found a grunge texture on Google Images and added it as a layer. Then I posterized it to 3 colors. I used the color select tool to select one of the bottom colors. Then I laid my gradient over the selection and positioned it where I wanted it. I then applied an inverted layer mask to the gradient from the selection. Then I placed a duplicate of the original gradient under my edited one. I didn't like how the corners looked so I selected then with the lasso tool and adjusted the saturation and lightness. Finally, I inverted all the colors.
