I tried on both colors and i found that the Lavender is a light color and gets darker as you apply more. I would say I liked the Lavender better.
i have the violet color & if u like bold this is a great color...its a true purple pink color....and its a wearable color..........i dont have the lavender so cant comment on that one - i know u said u wanted a hint of color but this color might be a good addition if u like bold :)
I would go with violet. I have it and find that its more 'natural' in an appealing, fashion forward and flattering way. Lavender lip color comes across in person as washed-out and even outdated- but it depends on your complexion and sense of style. In a weird way, i think the violet option is safer, especially if your trying out bold color for the first time. Thats why i bought it: I have violet and the great thing about it is that you can manipulate the color by the amount you put on: if you dab it lightly on the lips then its hue is lighter and more natural but with some 'pop' while if you smear it on it'll give you a standout, bold look.