No on the Back to Black, but Platt's Black, no, the one I'm growing definitely isn't as dark - it's over 3 years old now.

Thanks Bamboo, that's what I thought about Platt's Black', I guess what I'm wondering is, if any of the other black forms hold their colour better, or is faiding a general problem with all the coloured forms of Phormium ?

I had 2 Platts Black and they do indeed stay black permanently.
I removed mine though because they're the Phormium that has the very soft, floppy leaves and i wanted an upright, stiff leaved variety.

Intersting Louise, how long did you have yours for ?

I had them for 3 years Bluespruce.
They were planted in a dry south facing border and loved it there but the form of the leaves just wasn't giving the look i wanted to achieve there, so i gave them to a neighbour.

Their colour though was second to none, i had Ophiopogons there too but when i moved the P Black i moved them aswell because the colour in that area now is a bronze theme, i replaced the PB with Bronze Baby - this gave me the upright look i wanted.
Along with the BB i have Phormium 'Surfer' (the bronze one, not the green one) which is also upright but only reaches about 18" max.

I love bronze plants and i love the Phormiums !
In the short range i adore Jack Spratt, this one gets to about 10" max and i have this in another (!) bronze border but this time in the back garden !!!

The one I planted over 3 years ago was labelled Platts Black and was indeed very dark - but now it's got reddish bronze tinges, and isn't particularly soft and floppy as Louise describes, so its quite possible i was sold a bum steer, BS.

Mine didn't stay as dark either, I planted it, dug it up again and had it kicking around in a pot for a least another year so i thought it might be a bit starved as I did tend to ignore it whilst it was potted. I, cut back the old foliage in the hope the new stuff would be a better colour, but no luck.

How queer.
Mine stayed as black as licquorice, didn't change or tint at all.
I wonder if positions and soils affect them then ??

Bs, mine probably got no more TLC than yours in a pot ! The soil there is poor, thin and pretty bad but thrived !!!!