I'm 100% there was a thread on here where someone had had new TI springs put on and they were quibbling about the ride height and colour coding. My TI rears are coded white-red-yellow-yellow (they have paint dots on the spring). I've a feeling there was one less dot on the guy that had new ones fitted. It's vague, but I think someone said Alfa had changed the spec due to snapping issues. Maybe you could see if you can see the coding for us. You might need to jack the car up to see.
I went past a Black 2010 TI in Hitchin last week and it looked quite a lot higher than mine, still looked good, but I reckon it was between Lusso and TI height, certainly 15mm higher than my sportwagon which is 10mm higher than original TI. I wondered if this had some 'new spec' springs on it.
What is apparent is Eibach springs seem to give inconsistent heights, mine raised the car 10mm from TI height, but other folks measures are completely different.
The Eibachs on the front of my 'wagon are fine, but on the rear they don't work with any load. I would've liked to have put my TI springs back on the rear, but then it'd be lower at the back than the front. Thankfully now, Eibach have recognised there is a problem with Sportwagon rear springs, but I'm still waiting for what they're going to do about it.
Meanwhile, I've sent my TI rear springs off to a place in Sheffield to have them copied for rate etc, but raised 10mm hopefully to match the front Eibachs height. It's a risk, but they reckon they can do it. It's £140 a pair posted which is about the price of 1 TI spring.
If you have a real problem with you're height, there's a solution in an earlier thread. You just need to buy Joshpmc's KW V1 kit for £650.
GT 3.2 V6 - Q2, KONI FSD & EIBACH PROKIT, GTA REMAP, MICHELLIN PS3's, BMC CDA
159 SW 2.4JTDM TI - ALFATUNED, WIZARD BACK BOXES, KW V3 COILOVERS, NOKIAN WR A3/MICHELLIN PS3, PCA DYNAMICS ALIGNMENT.