where did the term blue collar and white collar originated
Blue-collar worker Historically the popularity of the color blue among manual labourers contrasts with the popularity of white dress shirts worn by people in office environments. The blue collar/white collar color scheme has socio-economic class connotations. However, this distinction has become blurred with the increasing importance of skilled labour, and the relative increase in low-paying white-collar jobs.
White Shepherd The White Shepherd is a direct descendant of the German Shepherd Dog and the two breeds share common roots and are similar in appearance. However, the White Shepherd evolved from a continuous selection for a working companion dog with that exclusive color, beauty and elegance as seen both standing and in motion. Its high degree of intelligence and sense of loyalty have allowed it to become one of the most versatile working dogs (as well as pets) in existence.[4]