Welcome. Like Leih already mentioned, it would be nice if you could give us your name, since I doubt you sign your checks with your screen name.
Two DS's can create a fawn. It would be the compilation of recessive genes, and both parents would have to carry that recessive. This happens a lot more in dogs that come from a KNPV/working background, but very rarely also happens in officially (Dutch) papered dogs. In the short haired variety, the stock that has been bred more from show lines, has mosty eliminated the recessive fawn from their puddle. Tha long haired variety has relatively more fawn amidst their population, but they are such a small group, bordering on dangerously low numbers, that they would do good not to focus on that glitch too much for now, until they have a healthier population, numbers wise. As it stands now, the breed club in Holland will not allow a fawn to be bred (and supply papers to the offspring) I have personally found that the fawns act (a lot more!) like malinois than the brindle littermates.
But let me shut up. Maybe the genetics experts can shed light on your dillemma.
As far as your pups behavior towards other dogs. I agree with the advise that you are going to have to work through that. It is likely born out of fear for the other dogs. Puppy classes with a lot of exposure to other (friendly!!) dogs might help, especially if you have a good instructor who can guide you. Be firm when he displays his unwanted behavior, and never soothe or calm him. Make it a
'oh no you don't' type of session, followed by lots of praise when he complies and quits the antics. But really, best seek someone close to you to help you out with this. Internet diagnosis is just a tricky thing.
Facebook page.
The only concern that I've had so far with him as hes now almost five months old is that he seems to be very reactive towards other dogs when we are out walking, he will growl and bark as well as sometimes lunge at the other dogs. But when slowly introduced to them he seems very submissive towards other dogs? Licks their muzzles and will roll onto his side and back. 
Could the leash restricting him from getting to the other dogs being frustrating him enough to cause his reaction towards them? I have been trying to work with him outside of his reactive zone but it never seems to stay the same distance, sometimes hes good 10ft away other days it seems if he even sees a dog he starts to lose his mind. He is wonderful puppy and very social other than this odd behavior and will try to get attention from every person he meets, especially kids and has never been mouthy towards people.
Also, in the user control panel, you can create a signature so you don't have to type your name every time you post.
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Judith Van Neerland Dutch Shepherds 
the bill is in the mail.
. (another issue being trying to convince my neighbor that the leash law does really include him and his three dogs as well 
, all big dorky lovable labs thankfully but not helpful for training right now)
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