Danish M/1910 kepi for the infantry | Hue M/1910, infanteriet, for menige.

Danish uniforms between 1889-1945. Here are shown the following patterns (from left to right):
1889(92), 1903, 1910, 1915 and 1923. Notice that helmets were first introduced in 1923, and that the 1903 pattern were of a "green-grey" wool. The kepi remained the same in seize and shape, only changing the colour, before finally being redrawn from service with the introduction of the helmet.

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Following extensive troop trials in 1901-1902 the Danish army introduced a "green-grey" uniform in 1903 with brown leather cartridge carriers and belt - and a back pack and haver sack in the same colour as the uniform. It had a loose cut with a turn down collar and hidden buttons. Not unlike the German 1915 uniform.

It did however not last long in service. The green colour and the loose cut met fierce resistance from certain circles in the armed forces - most from the officers. Most of the army reverted back to a uniform in dark blue in 1910 with black leather gear. The only regiment that kept the grey-green uniform was the Royal Guards where it soldiered on until 1923.

Uniform model 1910:

Infantry units would wear: 

Light blue kepi with black leather and "silver" buttons. 

Dark blue jacket with "silver" buttons and red piping.

Light blue trousers - folded at the bottom and worn outside the boots. 

Artillery, medical and other "support" regiments:

Dark blue kepi with black leather and brass buttons. 

Dark blue jacket with brass buttons and either (depending on regiment) light blue, maroon, green, grey or yellow piping.

Dark blue trouser - unfolded and worn over the most of the boot. 

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Following photos are of my own 1910 kepi. It's a standard infantry kepi in a larger unusually large size (about a 61-62 in Europe). It belonged to a private in the 4 battalion. Very little moth damage, and overall very little wear. The leather is however quite brittle and the rear steel support (to keep the shape) is bend a little. Apart from that it is in good condition - considering it has passed 100+ years.
   

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Source:

Hvidt, A, The Danish infantry's uniforms and equipment through-out the past 200 years.