First, a reference to submitting mood themes for public use? The only mention of it I have found is on theGuide to Mood Icons which is accessible through the How do I create a custom mood theme? FAQ. The custom mood theme FAQ is under the category of Paid Accounts, which is odd placement for a Free User looking to submit a public mood theme. (the thigh bone is connected to the leg bone...)
Second, FAQ 57 mentions just under the link to lj_art:
I don't see an entry to comment in.