On this white background stands a blue dragon with a toothbrush between its teeth. Its underside is white and its horns are purple and its eyes are red. Beside it, a green dragon sits proudly on its hind legs with a white underside. It also has horns that are deep purple and fierce red eyes. Between them, a toad lurks quietly, watching the two dragons with wide eyes.
For updating the picture, I think a color palette of cool blues could bring out the toothbrush dragon. A color of olive green could be used for the toad dragon and use a pop of bright yellow for the toad. To finish it off, a hint of light pink could be added to the horns to give it a subtle yet sweeter look.