Sakura Ballsign Knock pastel gel looks amazing on quality black paper! This pastel pen comes the closest to looking like chalk of all the pastel gel pens we've tried. We also think it's a great way of adding pastel color to our grown-up coloring pages. Your choice of the following pastel colors: Pastel Green, Pastel Pink, Pastel Purple, Pastel Blue, and White. .6 mm tip size. 5 Color Sets available.