IMO all three would each give the watch its own

distinct look...depends how formal or sporty you feel with your watches.

The tan idea popped into my head...since it is not usual to see it. I did once install the tan zulu on a Seiko 200m dress diver Kinetic and thought it cool looking.

Since the zulus are so easy to switch out, you can go black for more 'formal' looks haha! This is because black will refocus the eyes on the watch head itself.

Green suggests summer/ or military and would be complementary to the lume pip....hehehe!