Who says gel pens are for kids? We like to use them to color-code our thoughts, plans, and ideas. Each pen features a unique ink color, barrel color, and quote. Who says gel pens are for kids? We like to use them to color-code our thoughts, plans, and ideas. Each pen features a unique ink color, barrel color, and quote. Helmed by a group of real-life BFFs, LA-based ban.do is serious about fun. Their effortlessly effervescent lifestyle pieces, clothing, and accessories are distinguished by a playful, sunny-day spin on style.