I'm of two minds on this. Of course, with any thought of a tattoo, there are always the risks and costs to consider -- safety, time, money, pain. I'm not averse to the idea of getting a tattoo
First, my taste in makeup, my long-term taste in makeup, is sufficiently subtle and flattering enough so that I could get a touch of eyeliner added and have my lips quietly colored up a touch around the edges -- permanent lipliner the same color as my lips, smoothed in so only the expert eye could tell the difference. I'd still look like me, only a little more polished/tidy/professional. I would like the ability to always be able to look like I'm wearing that tiny bit of makeup that I would wear on a regular basis if I had the time and inclination to put it on. Tattoos don't rub off, wash off, or sweat off, and those are my constant enemies with makeup. It would be a definite job accessory, given that I don't always have the time/energy to look my absolute best when running out the door, and every little bit helps.
Second, though, is the fact that my lips do not always stay the same color. When I'm exhausted, when I'm angry, when I'm excited, when I'm turned on, when I'm stressed, frightened, worried -- these all come with changes in lip color. I more than occasionally go into mild shock, and my lips turn dead white. I don't want to compromise my own safety by hampering the ability of my friends and those who know me best to read my face. They know when to just grab me, sit me down, and make me have something to drink. A large part of being to tell whether I'm just a little freaked or if it's time to grab me and get me seated before I pass out or start gibbering is my lip color.
I think if I limited it to just edgework, so the majority of my lips would go white if there weren't lipstick over it, it would be safe enough in the way of body language. But I'll have plenty of time to think it over, since I won't be in Atlanta nor have the money any time soon.