The only costuming requirements to be in the Darkstar Titans Squadron are.
Navy Blue or Olive Drab flightsuit with the nessecary patches.
these patches are;

Placed at top of the right sleeve, 1/2 inch from the seam centered.

Placed above the right breast pocket.

Placed at the top of the left sleave, 1/2 inch from the seam centered.

Placed 1/2 inch from the squadron patch centered.
and a Name patch, above the left breast pocket.
Name patch Layout:
Wings: Silver (SGC: USAF Senior Space Ops, Prometheus: USAF Command Pilot, F-302: USAF Space Ops)
Border Color: Gold
Text Color: White
Back Color: Navy
Text Layout: Alt-2
Name Line: <First Name> <Last Name>
Info Line: <Rank> USAF
and a pair of boots.
Anything else is optional but not necessary. I myself do have a flight cap but rarely wear it. I hope all that info I posted isn't overwhelming.