How about metallic green? I once had a 1972 Targa that came in that color.

<iframe width="854" height="480" src="https://www.youtube.com/embed/LP6PHAXhQsk" frameborder="0" allowfullscreen></iframe>http://

I went through the same process when mine was in primer; all of the sudden you have a clean slate and all these color options. I ultimately decided to stay with the factory Light Ivory which I happen to really like a lot. So staying with it wasn't a big deal for me. Brown would definitely test me. I would maybe stay with a color that sort of relates a bit to the brown?
Porsche made a later date brown color called Nugget Brown which to me is quite nice. Do an internet search, it will come up. It’s less in your face.
Other browns:
Tobacco Brown
Chocolate Brown
Copper Brown
Quartz Grey Brown
Expresso Brown
Some other color options that might be somewhat sympathetic are below.

Here's a link to all sorts of colors: http://forums.pelicanparts.com/porsche-911-technical-forum/180595-rare-porsche-colors.html

Gold
http://forums.pelicanparts.com/uploa...1464984962.jpg

Olive
http://forums.pelicanparts.com/uploa...1464985091.jpg

Gray-Beige..not sure of what the actual color is called but it’s rare and really nice.
http://forums.pelicanparts.com/uploa...1464985189.jpg

Maybe Orange?
http://forums.pelicanparts.com/uploa...1464985274.jpg

Leaf green with brown or cork interior

These are all great colours..We did own a '71 in Tangerine which we really liked; my bias is black. If it was mine, I would tend to keep it in Sepia Brown... It's a very unique colour.

Speaking of unique colours...Did you happen to see the Scandinavian movie "The Bridge" Quite a movie!
I didn't know what to think of the colour of the '77 911 that they used in the movie, but after seeing it often, I came to quite like it.

Definitely a rare colour... With a nice set of Fuchs I thought that it looked good. so[/I]
https://www.theguardian.com/tv-and-radio/2014/jan/18/the-bridge-porsche-cult-status

That leaf green is interesting...356 like in it's sublety

After having my car for a short while I started saying, "Any color as long as it is silver!" because it hides any dirt amazingly. You can drive it through a rainstorm and people will still complement you on it.

That said I have been lusting after a long hood and my two favorite longhoods are in gray and aubergine.

(Not sure what they gray is called but here is an example...)
http://i30.servimg.com/u/f30/17/40/16/91/dsc_1515.jpg

My signal orange '70T.
The original color. If I had a choice to change (I did but chose original) I might have gone signal yellow or Bahama Yellow - not quite as bright.http://forums.pelicanparts.com/uploa...1465181778.jpg

Man, I do like that Olive. It's at the top of my list if I ever paint my 68 912.

"Phoenix Red" was on my 914. It's actually a very bright orange & looks great!

Recently I've started really liking white on 911s.

I once saw an early car painted in a pearl looking white. It was fantastic.

This is an old photo of the car. It was stock with a black basketweave interior. A unique thing about the car was the rare option of its Factory A/C by Behr.

http://forums.pelicanparts.com/uploa...1465189077.jpg

Maybe check out this "rare porsche colors" thread:
http://forums.pelicanparts.com/porsche-911-technical-forum/180595-rare-porsche-colors.html

Mark