Create a stone texture in a 16x16 pixel grid format, designed in the style of Minecraft. The texture should be a flat, pixelated design without any 3D effects. Use various shades of gray to represent the stone, ensuring the texture remains simple yet visually appealing, consistent with the classic Minecraft aesthetic. Focus on subtle variations in shading to add depth, but keep the overall design clean and suitable for use in a Minecraft texture pack Ver mais