Here's some late Great War period cans from my collection:
The can with a Shell logo has had a WWI handle grafted (soldered) on to it.
Unlike Second World War and later cans they have the broad arrow/ crow's foot and date stamped into the handle rather than embossed on the top:
Further to some of the previous comments, the colour of cans is a matter of much debate.
The commercial ones came in a multitude of colours, dependant on the brand. However, there were refurbishment programs where cans would be repaired and dipped in (usually red) paint.
Military cans were khaki/ green/ black/ white, etc. as stated. In theory, fuel ones were stamped "PETROLEUM SPIRIT HIGHLY INFLAMMABLE" (this, and their capacity, makes them still legally useable for petrol today-unlike Jerry cans!) and the water/ lubricant ones were blank.
However, logistical demands meant that the right can wasn't always available -my uncle also had to endure foul-tasting water from cans previously used for petrol during the Second World War.
Valor is a common make, but others include Feaver and FF&S.
Incidentally, Canadian cans (with the lip on top -this is also found on early Pratts/ Anglo-American cans) more often than not seem to have alloy rather than brass caps.
Could go on and on -I collect two-gallon cans (or "Toucans" or "POW" -Petrol, Oil, Water- cans). I have over a hundred, about forty of which are military, the rest all different brands. Depending on the logo, and condition, values range from a couple of quid to several hundred pounds for rare ones -this also applies to the lids. Sorry, but yours -though nice- are at the lower end of the scale!
-Roger.