Thanks both of you. I make a try with red polish turtle wax compound (aka brown mud, the only available locally), without results. At end, my eldest son take a can of red paint and cover the disaster (he has some artistic habilities from his mother side - using a spray near chromes without touching it is something to me can´t be succeful). Tomorrow I will be making a second hand of paint, some polishing and waxing.

Joaquin