brown v seal brown

I can't figure out what the difference is between brown and seal brown. Visually it's easy: brown looks brown while seal brown looks more like black with a hint of brown but genetically they both look identical to me: Ee Ata & Ee Ata
https://www.equiverse.com/horse.php?id=647633
and
https://www.equiverse.com/horse.php?id=636810

Please help :)

^{The "brown" has dun so it looks different to a seal brown, which doesn't have any modifiers acting on it.} 

The seal brown in that link also has roan, which lightens the coat :)

When I went to try it with customized horse, I couldn't even choose brown for my Gypsy. There was only seal brown available...

So what would be a difference in gene display (in EV) between brown and seal brown if there was no roan, dun or anything else involved ? Just plain solid: one brown and one seal brown ?

Last edited on 2019-05-24 at 07:33:50 by Lenka

^{There is no brown on it's own, it's just seal brown.} 

If you're talking about brown dun it is not a base coat color, you have to add dun to a seal brown base. In the custom horse menu Dun is underneath Base Coat.
In the gene display, a brown dun horse would show it has dun (Dd or DD) along with a seal brown base. The difference between the 2 horses in your example is that the first one has no dun (dd) and the 2nd has dun (Dd). Without dun the 2nd horse would be just be seal brown.

Last edited on 2019-05-24 at 08:17:57 by BubblesTheSandDragon

Oh, I see, now I finally understand :):):) Thank you so much !!!