In a dark night there is always the reflection of the color that falls in the form of rain.
About the paper: The stone paper is literally made of stone (calcium carbonate) is typically used as a binder resin nontoxic polyethylene high density, making it waterproof and durable. For the manufacture of this paper no water, power or bleaching chemicals is required, that is considered an eco-friendly or environmentally friendly paper, When painting over it has special characteristics.
The paper is placed on a wooden board, but without a frame.