stupid question? (only if you know the answer)

Looking at buying a new LG L226WTQ monitor (due to good reviews, feedback, and forum members) and was wondering what the difference between this and the L226WTQ-SF was if any.
The specification seems to differ slightly from site to site on the WTQ model and am not sure if the SF is a new colour or a different spec monitor.
Any ideas???

I'd imagine SF stands for silver finish. The LG website doesn't seem to mention different models.