You could get away with a Harlequin Tusk with a lion. Although the have a truly menacing appearance (i.e. scary blue grill) they are actually rather docile for a large wrasse. Mine only is only an ass at feeding time

They never stop moving and are an excellent "showfish" and as far as color. . . .IMO. . .it doesn't really get much better than a tusk
and if you wanted to try it. . .you could probably run a Lunare Wrasse in there to. Eventually he would get a little big for the 110 but from my experience they don't get THAT big overnight. They tend to be more aggressive than a tusk but they are also not over $100 lol.
My tusk was a gift ,as were all my saltwater fish (except my moray)
A decent Lunare Wrasse will usually run you $20-$40, at least around here anyway.
As far as damsels with the lion or eel. Most are fine as far as not being dinner. They are ninjas for the most part and are really fast and agile. And I'd hate to say it but if one ocassionaly does make a wrong turn and is eaten. . .they are easilly replaced. I'd stay away from the huge really pissed off damsels like dominos, velvets, and sergeant majors. From my experience not many fish enjoy having them around as tank mates in a tank that small. Too big and too angry. Go with smaller more slightly laid back ones like YTBlues, Goldbellies, Bluefins and my personal favorite Talbot's. Yes you're bound to lose one eventually when your lion is bigger but that's the price you pay for your lion's safety and comfort.
Other wrasses you could look at are . . .
(these are all typically more docile than a big Lunare)
Sixbar or Hardwicke Wrasse (Thalassoma hardwicke)
Paddlefin Wrasse (Thalassoma lucasanum)
Pinkface Wrasse (Thalassoma quinquevittatum)
Red Coris Wrasse (Coris gaimard)