This coloring page features three cats, each with its own unique expression of frustration. The first is sitting with its head in its paws, overwhelmed by whatever is happening around it. The second is desperately pulling at its fur, signaling intense stress. The last cat is just lying on its back and appears completely overwhelmed. All of them are surrounded by an array of gears, cogs, and other mechanical parts, giving the feeling of being stuck in a machine.
To bring this vexed scene to life, try using mostly blues and greys for the cats - making sure to still emphasize their facial expressions. The gears and cogs can be in darker shades of brown and black, with variations of red and orange to suggest an active, industrial environment. Painting a few gears in gold or silver could be a great way to add contrast, as well as give a sense of a looming threat or uncanny presence. Finally, a few lighter accents of pink or purple could create a pleasant contrast against the gloominess of the theme.