At least from the video , it looks like it came out pretty well . They ' re supposed to move the paint away before you pull your armetc back out of the waterpaint . Regardless , looks awesome ! I ' ve seen guitars made this way it ' s called something like swirling guitar . Here ' s an example link zPlbKUt 0 W 9 k <| sep |> I don ' t think the purple dye would be an issue as long as she gets it done maybe a week prior . I ' ve gone purple several times , and the only times I ' ve had to worry about it transferring is after the first wash or two , when it gets on the towel I ' m using to dry it . OP , the only issue I see with you adding lavender is that you ' ll probably have to bleach , and if your hair is anything like mine , pastels will fade very quickly . I ' ve noticed with my hair that if I go a very intense purple , it will fade to a really pretty lavender in about a month , so that ' s an option . I would definitely recommend testing it well before your wedding date .