Oh such beautiful colors.

To create a border you open a selection 100 x 100. Cut and paste your favorite picture in the selection or fill with colors of your choice and design using the flood fill, air brush and tool controls panel. Then apply a cutout or buttonize the image. Add a right border, make sure the box symmetric is unchecked. Do what you will to the border. I like a drop shadow effect here and I might use the color features to change the colors. Save the picture as a gif. That way you can use the original as a template for making buttons. Then select a color from the picture and add a border. I use 1000 on the right only. Save again with a new name. Example: I saved the first one as santa.gif and the second one as santabg.gif