I got two of these recently and I love them.  They're plenty deep in the seat, and the right balance of comfort and firmness so that you're comfortable sitting (and they're actually not bad for your posture due to the seat angle, etc), but that you can still get up after (despite them feeling fairly low).  

The colour is definitely more in the 'beige' area, but it's a comfortable natural colour and I think the fabric will last.  It'd be pretty tough to match anything labeled 'ivory' from varying brands anyway. 
I've only really knocked it down by one because it's fairly easy to accidentally flip the front legs back when you're scooching the chair forward.  That makes this either an awesome folding chair or a slightly fussy armchair.