Organic agriculture is an ecological production management system that promotes and enhances biodiversity, biological cycles and soil biological activity. It is based on minimal use of off-farm inputs and on management practices that restore, maintain and enhance ecological harmony.
Try using the milk chocolate melts with some black coloring for the black and some white chocolate melts with the yellow and black colorings for the gold (reminder: use the black VERY sparingly).
The grey color, called bloom, is cocoa butter or sugar that has separated from other ingredients. Bloom may occur in chocolate over time or when chocolate is subjected to high temperatures. It does not affect the freshness or flavor. If bloom is present, careful tempering is necessary to achieve a beautiful luster.