Technologies Applied to Cultural Heritage / Graeco-Roman Mosaics and Wall Paintings / Science for Conservation and Restoration of Cultural Heritage / Ancient Pigments Analysis / History of Pigments / Egyptian Blue / Conservación Pintura Mural / Near-infrared photography / Analysis of Pigments on Ancient Artifacts / Egyptian Blue / Conservación Pintura Mural / Near-infrared photography / Analysis of Pigments on Ancient Artifacts