When it comes to beauty trends, what goes around always comes (back) around. In this case the trend is bold eyeliner in fun, and funky, colors. Taking a page from Leslie Mann’s beauty diary, I just know that bright purple, vivid teal and shimmery gold eyeshadows are all going to be super-hot this fall. But if you’re not trying to look like Rainbow Bright, the trick is to apply just a little of your bright liner to the upper lid and then apply a neutral shadow to blend it in. Leslie opted for Lancôme’s Design Gel Eyeliner in Dress Up Teal and paired it with their Design Inifinté 24H in Eternal Gold and Design Eye Shadow in Burnt Sand.