“Instituto Nacional de Antropologia e History (INAH) is in the process of restoring the murals at BONAMPAK in Room 3 of the Temple of the Murals. These murals were painted in 787 CE to commemorate a victory over the city of Sak ‘Tz’i. The vivid colors of the artists have been brought back to life. The whole task will take 4-5 years. Harsh salts have covered the murals and seismic activity has damaged them. In the process, new figures in the murals were revealed. Three male figures and a solar deity and God N have been uncovered in the paintings. The restoration has revealed some of the secrets of the muralists in creating these colors on limestone walls.
INAH has the story HERE with one of their outstanding slide shows of the murals being restored; (click on the tiny “fotos” link near the top.)”
I just received this info from Michael Ruggeri’s Maya Archaeology News and Links! (The article is written in Spanish).