Per your request, a lime green contrasted with a darker green or blue. colors can easily be switched around or changed. Conveys, as you request, stability and strength and has a masculine look, includes simple diamond. This would print well in just one color on staff shirts or vehicles, too.
sww==eeing the spacing now, I'd move the wording a little more to the right and right on top of each other (see my entry for Gordian). I'm a little short on time because I have meetings & trainng throughout the day...would appreciate comment either wayaating