The Halicarnassus mausoleum expresses an incredible level of grandiosity and artistry from the 350 BCE. It stands proudly as one of the Seven Wonders of the World and its magnificent structure is worthy to be admired and colored. The rectangular structure is crowned with a pyramid-shaped roof and is decorated with stunning reliefs and sculptures. To bring this piece of ancient art to life, you could mix gold and silver colors for the sculptures and reliefs, brown for the structure, and perhaps a few brighter colors for the reliefs. You could also draw intricate patterns to really make the colors stand out. To really set the piece apart, you could use different shades of the same colors in order to emphasize the shadows and highlights of the mausoleum, as if it is illuminated. Either way, you can use your imagination and creativity to make Halicarnassus mausoleum come to life in your own unique and vibrant way.