#2 - Like the high contrast colors. This looks great on paper. Not sure how this would look on safety red or orange coveralls so maybe there's an alternate color scheme for this case? This is an early favorite.
Pantone Colours: Blue #280 Orange #1375 Grey #7543
Also, should you need any further or future design services you are welcome to contact me directly here through Logo Tournament or alternatively at tylerwilliamson@shaw.ca