Assistance Sexing My Honey Gourami Trio

[KrystaK]

I rehomed my Pearl Gourami yesterday and bought three Honey Gourami replacements. One is a red Gourami (I now wish I had bought one or two natural honeys, they had such a nice chocolate color, but anyways) I also bought two Gold Honey Gouramis.
 
With my Pearl it was easy to tell, as with males the dorsal fins are very different from the females.
 
With my new Honeys I'm not sure, and the guy at the pet shop wasn't really sure either.
 
Can I get some advice on how to sex them? Judging dorsal fins isn't as easy as I had hoped. Are there other ways to tell? 
They are all about an inch, so I'm guessing they aren't full grown just yet. 
 
I noticed that one of the Golds and the red have a more domed head while the other gold has a more sloping forehead, but I don't know if that will help tell gender or if it's just genetic variation.
 
I'll try getting some pictures to add, but they're quick little fish. Very quirky

 
 

 

[Shelster]

In my profile pic is a male, in my sig a female.

Females have grey stripe from eye to tail fin, males have orange near tail fin and slight black under mouth.

Can you see the difference in mine?

If you post pics I can sex them for you, I have one male to four females.