Create a gradient manicure with multiple shades of brown. Start with a creamy white or tan shade then go darker on each nail toward a dark chocolate or mocha shade.
Choose a darker brown to create the shape of your tips, and then take a lighter shade and nail dot tool to create fun designs. You can always do the opposite, too.
To complement brown tips, add a bit of white polish to the design. The white will make the brown pop and offer a nice contrast, so you can keep it simple or create shapes.