Today, I had to create a simplistic tool for one of my side projects. What I needed was a quick way to create an image of a specific size, filled with specific color. If it was just for me, I could have survived with the Linux command line, of course. But there are other, non-technical people involved.
I coded a quick prototype in PHP with ImageMagick, which I called Color Image Generator. Once the functionality was there, I cleaned it up a bit and published to GitHub. You can grab the sources and use them any way you like, or you can use the hosted version. Enjoy!