You can easily create a new look for an image by using a little creativity in Photoshop! The colors of this urban art dragon were inverted in Photoshop (Control/Command I) and then softened with Topaz Adjust Portrait Smooth for a painterly look. The image below shows the original dragon colors.
If you really want to have fun with color, alter the Hue by making a Hue Saturation adjustment layer! For the purple dragon below, I inverted the original and adjusted Hue to create a new look. An adjustment in Hue gives you control over colors, and can make a very different interpretation of the original image.
We do this, and more in my four week online course, Photoshop - Enhancing Images and Creating Works of Art at Betterphoto.com. Classes start in July! I hope to see you there!