When the tile combines two tones, the color is always applied with a brush. This technique allows for the combination of glossy and matte surfaces, the application of lustres or precious metals, and rich, textured colorations, resulting in aesthetically interesting contrasts.
Brush application provides greater precision and control in creating transitions and gradients between tones. The manual dexterity of the brush allows for the precise dosage of color and the ability to play with texture, adding a distinctive touch to the surfaces.