Lovely composition and the orange flowers look good against the white background. I remember when I very first started with photography (I used Picasa not PS elements) I had a similar experience with the colours I used for the border when I reduced the size to upload it. I think it possibly occurs as the quality of the image is reduced. With PS elements, I now reduce the image size and select save for web, which hasn't given me the same problem. I'm not really any expert and don't know anything about Paint Shop Pro, but I'd guess it's occuring during the reduction process?