original: These flies are clothed in black or pale (white or golden) hairs, and are themselves either black or metallic green or blue.
simplifications: These flies have black or pale (white or golden) hairs. Their bodies are either black or metallic green or blue. These flied have Black, white, or golden hairs. They are either clack, metallic green, or blue. These flies are covered in black or pale hairs. The files are either black or metallic green or blue. The flies are clothed in black or pale colored hairs. They are either black, metallic green, or metallic blue. These flies have black or pale (white or golden) hairs. The flies themselves are either black or metallic green or blue. These flies have black or pale (white or golden) hairs. They are either black or metallic green or blue. These flies have black or pale hairs and black, metallic green, or blue bodies. These flies are covered in black or light colored hairs and are black or shiny green/blue in color. These flies have black or pale (white or golden) hairs. They are either black or metallic green or blue. These flies are covered in black or pale (white or golden) hairs, and are themselves either black, green, or blue