Ключевые слова: area texture, artistic texture, artistic textured gradation, background texture, charcoal background texture, charcoal on rough surface, charcoal powder texture, charcoal texture, charcoal texture background, charcoal textured area, dark to pale gradation, gradation, gradation texture, gradation with texture, gray texture background, rough charcoal, rough charcoal gradation, rough charcoal texture, texture background, texture gradation, texture of rough charcoal powder, textured gradation,