The lighter green is more the Bhut Jolokia aka Ghost pepper. But they both look to be a cross and not a true ghost pepper.

Here is a plate to compare, the light green may just be small but it looks close anyhow

Mark

This is more representative of how theyend up, more like in your pic. And these are all from the "ghost" plants that started as the dark green color fruit. It's getting cool in KC and they are now all shorter and fat like my first pic shows.

what about the flavor? do they taste the same?

As far as the names go, I have learned in this forum that "Bhut" in Indian language means "ghost" and "Jolokia" means something like "chili" or hot pepper. So then both names by OP refer to the same pepper.
Bhut Jolokia = Ghost chili (pepper)

Kclost, those peppers in the pic you posted are Bhuts aka Ghost peppers. Do they both end up like that or all those pictured from one plant?

Mark

To me they both end up the same but the red peppers I believe all started as the darker green pods. I have a few of the lighter ones starting to ripen so I will take a few more comparison pics when they are ready. Maybe they don't get as red as I thought.

They are hybrids/crosses with Bhut Jolokia parents somewhere in there.

I've had Bhuts start out both pale and dark green.

Josh

So which is true? All my ghost that I have grown from the parent plant to every subsequent child (seed saved from parent and child's) plant has been light green to slightly darker green (not as dark green as photo above) orange, then to light red then if you have the patience to wait dark red.

Mark

Ok I'm going to post a series of Pics that show what I can describe the best for each variation of pepper at various stages I have right now. I am going to refer to the peppers as either "Bhut Jolokias" or "Ghosts" to match what was on the tags when I bought the plants.

First the light green Bhut Jolokias, I have these on two vines...
The red one in the background is on a different plant so ignore that for now...

This post was edited by kclost on Wed, Oct 16, 13 at 20:12

Side by side of Bhuts one "just" turned to orange.

Another Bhut Jolokia that has just turned orange. A big fat one. Trust me these are all Bhut Jolokias according to the tag. And they will turn more red and have been longer and skinnier earlier in the summer.. But I think the colder weather has stunted their growth.

Ok here are some of the darker green peppers that are on a plant that I purchased just called a "Ghost Pepper". Same nursery but different tag (that I think I threw them all away, lol I have 6 of these plants..

This post was edited by kclost on Wed, Oct 16, 13 at 20:17

Here is a "Ghost" just starting to turn.

Several "ghosts" that have been red for a while for the most part except for the tips. I'm not sure if that is an effect of lack of calcium or not, but it is very common on these peppers.

A couple of ripe (to me) "Ghost" peppers, again that started out the darker green color.

Tell me what you think if I haven't confused the hell out of you already. lol..

I'll post another pic or two of the orange Bhuts when they get darker if the frost doesn't get them first..

Well the frost got to the peppers the last couple nights so I can't post any more pics. But I am convinced that the darker green peppers are some kind of cross, not pure bhuts. They are hotter than hell though, just as hot as the Bhuts. They do not ripen consistently either as the tips stay green longer and often develop rot which I thought was BER (could be but nothing on the bhuts or red habs I have). Who knows I guess it will remain a mystery.