Purple(ISH???) stem, is this a deficiancy? Pic included, plz help

This is pretty weird to me since only one part of it is a purple-browniesh color.. I was thinking maybe my 42W Cfl was to close to it, but the leaves are showing no sign of heat stress so I think that's out.

Dunno, could be nothin, could be somthing.. I got no clue this is my first grow, thanks.

Mine did that. It gradually fades away, but if it stays a while you may be watering too much. Looks like you got a little bit of stretch. How close is that light?

its lookin ok to me maybe wont to get some movein air to make the stem get stronger but apart from that its lookin good

Strech was from Agro-Lite, now that I've switched to CFLs at 2 inches away it stoped growing tall and started focusing on leaf growth for a day so far...
Anyways I'm glad its not a deficiantsy cause it's my healthiest plant.

I have another plan and it has 2 of those floppy lookin leaves and 2 leafs that really symbolize weed.. All 4 of em are drooping as fuck but its a brand new plant only a few inches tall. No clue what it is an im almost positive I'm not overwaterning, are there any other causes to this?