Searching for a Fic

[itbodeswell.livejournal.com]

I've been looking for "Barely Perceptible Green" by woebetidesweet...at least I think it's the fic I'm looking for.  It is the one where Spock is being overly clinical (ie calculating percentages) while they're having sex? And it's in a library?  Or I'm remembering it wrong...Anyways I thought I remember it being on LJ but it seems the author may have purged their account.  I'd appreciate any help I can get!  Thank you!