Yes, I (or "we") realize that.
But I've seen many WW2-photographs, showing torpedo-impacts with a whole range of colours and shades in the big splash...allthough the shades were mostly shades of white, grey, and black (due to the black&white photography, which was most common in WW2).
Of course, it's the result of where the impact was, and of which substances were present in that area of the ship.
But since we can't have a range of splashes, I'm thinking of a compromise.

:up: :up:
CapZap

Sure CapZap ?

Or are they chemical residuals from the explosive combustion... ?

As Paajtor wrote, into the movies from WW2, we can see lot of black smoke into the splash... of course they are in black and white.

Many explosives has colored chemical residuals.

Any way... it is a way to give the game a "better" look

In the case of this particular photo, yes, I am sure, and there are plenty of examples of the same kind. If you look at the side of the ship, there are some sqares and crosses painted, and those are to measure how much the material (steel) bends before snapping due to the explotions. But you are also correct, because it also depends on what kind of materials are in the area where the torp hits. (Oil, fuel, chemicals of diff nature, oil, sulphur, gun powder, magnesium... you name it). And also I agree with you in the fact that in any case, it makes a very nice visual effect. :up:
CapZap

i say a good healthy combination of charcoal grey and battleship grey mixed in with the white would give a very realistic looking impact splash.

yes you might see a darker color in a few rare cases but the way it looks the majority of times is what we need to represent.

Torpedo Los!
 

A few minutes searching reveals:

http://www.worldwar1.com/photos/tgw137.jpg
http://www.spacewar.com/images/taiwa...get-afp-bg.jpghttp://ubootwaffe.net/images/U372_01.jpghttp://www.rivervet.com/images/Whitf...0AG%20L116.jpg

As you can see in the pics above, in general, when a torp hit a ship, the impact creates splash of white water, with a little touch of grey... that can change of course if other materials inside the ship get mixed in the ecuation. ;)
CapZap

So what we need is a random colour mixer that is able to produce a certain range of colours and put it right into the center of the splash ? :hmm:

I would say that a splash with 85% white, 10% grey and 5% brown would do the trick, or a combination near those values. :up:
That would cover the most common splashes seen in a torpedo impact.
CapZap