Why is the Air Force uniform blue?

(1) I determine for the uniform of the soldiers:
I.
General characteristics:
1.
The national colors of the headgear in the form of a cockade or on the lower edge of the beret emblem are to be worn as a national symbol; A sleeve badge in the federal colors must be worn on the combat suit.
2.
Two crossed sabers are worn as hat badges in the army, a swing arm in the air force and an anchor in the navy. As far as berets are worn, these must be provided with the emblem corresponding to the type of weapon.
3.
Officers and middlemen wear embroidery on their hats.
4.
Women in the careers of the medical service and the military music service in the navy wear an anchor as a badge on their hat, officers and senior middlemen at sea also wear a gold-colored ribbon on the lower edge of the hat cone.
II.
Suit types:
1.
The service suit is gray for the army, blue for the air force and dark blue for the navy. In certain areas, the army and air force uniforms are sand-colored, while the navy is sand-colored or white. The dress suit in the army is black, in the air force blue and in the navy dark blue.
2.
The formal suit of the women in the careers of the medical service and the military music service is dark blue or dark blue and white.
3.
The color of the combat suit depends on the respective purpose. On the combat suit, camouflaged print, black-colored rank badges are worn on the slip-on loops instead of the silver-colored badges.
III.
Rank badge:
1.
Army and Air Force
a)
no rank badges;
b)
a diagonal stripe on both epaulettes;
c)
two diagonal stripes on both epaulettes;
d)
three diagonal stripes on both epaulettes;
e)
4 diagonal stripes on both epaulettes;
f)
five diagonal stripes on both epaulettes;
G)
a braid open at the bottom as a shoulder badge;
H)
a closed braid as a shoulder badge;
i)
an angle with the point upwards and a closed braid as a shoulder badge;
j)
like sergeant, but two angles;
k)
a corner of the head with the point upwards and a closed braid as a shoulder badge;
l)
a head corner with the point upwards as a shoulder badge with a silver shoulder flap border;
m)
a corner of the head, including a corner with the point upwards and a closed braid as a shoulder badge;
n)
like staff sergeant, but two angles;
O)
a silver star as a shoulder badge;
p)
two silver stars as shoulder badges;
q)
three silver stars as shoulder badges;
r)
four silver stars as shoulder badges;
s)
silver oak leaves and a silver star as a shoulder badge;
t)
like Major, but two silver stars;
u)
like Major, but three silver stars;
v)
Gold embroidery on red collar tabs, gold oak leaves and a gold star as a shoulder badge;
w)
like Brigadier General, but two gold stars;
x)
like Brigadier General, but three gold stars;
y)
like Brigadier General, but four gold stars;
2.
marine
a)
no rank badges;
b)
a diagonal stripe on both upper sleeves;
c)
two diagonal stripes on both upper sleeves;
d)
three diagonal stripes on both upper sleeves;
e)
4 diagonal stripes on both upper sleeves;
f)
five diagonal stripes on both upper sleeves;
G)
two angles facing the opening with the tips pointing up and down on both upper sleeves;
H)
like Maat, but two upper angles;
i)
an angle, point up, on both forearms;
j)
like boatswain, but two angles;
k)
a corner of the head with the point upwards on both forearms;
l)
Senior ensign at sea
a narrow sleeve strip on both lower sleeves;
m)
a corner of the head and below that an angle with the point upwards on both forearms;
n)
like a staff boatman, but two angles;
O)
a medium-wide sleeve strip on both lower sleeves;
p)
two medium-wide sleeve strips on both lower sleeves;
q)
two medium widths, in between a narrow sleeve strip on both lower sleeves;
r)
Staff Captain Lieutenant
two medium-wide, between two narrow sleeve strips, on both lower sleeves;
s)
three medium-wide sleeve strips on both lower sleeves;
t)
three medium widths, between the upper and middle one narrow sleeve strip on both lower sleeves;
u)
four medium-wide sleeve strips on both lower sleeves;
v)
a hand-width, over it a narrow sleeve strip on both lower sleeves;
w)
a hand-width, above it a medium-wide sleeve strip on both lower sleeves;
x)
a hand-width, above it two medium-wide sleeve strips on both lower sleeves;
y)
a hand-width, above three medium-wide sleeve strips on both lower sleeves.
As far as clothing with epaulettes is provided, crews, NCOs from the bosun upwards and officers instead of the sleeve badges wear the rank badges in a corresponding arrangement as shoulder badges, NCOs from the bosun upwards additionally wear a closed braid on the epaulettes. Instead of the sleeve corners, mates wear epaulettes with an open braid, and chief mate with a closed braid.
3.
Navy officers, medical officers, officer and non-commissioned officer candidates
Navy officers, medical officers, officer and NCO candidates wear the additional badges specified in the suit regulations for soldiers of the Bundeswehr.
(2) I delegate the authority to determine the uniform of the soldiers - with the exception of the general characteristics, types of suits and badges mentioned in paragraph 1 - to the Federal Minister of Defense, provided that changes or new introductions are made only after my consent.