If you want to really pretty things up, try broadcasting colored stones (usually available in 40-lb. bags, various colors) into the concrete after you've made your last passes with a mag or resin float. Work the stones in with a mag, then wait for a half-hour or so, to give the mortar/fines a chance to set and lock the stones in place. Then gently flush with water (hose nozzle set on fine spray) while brooming away the excess mortar with a heavy street broom. Wet cure for a few days, then give it a wash with a very dilute (1:10, acid to water) muriatic acid wash. Give it a final coat of Kure-N-Seal to bring out the color, and get ready to watch your friends turn green with envy!