retro ones red and blue

How can I activate the red ones, and then the blue ones, from bellow : r/redstone

Brexit: Where Is George Osborne retro ones red and blue Putin’s Dream of the Black Sea as a Russian Lake retro ones red and blue #Londependence A Petition Is Calling for London to Leave U.K. and Join EU retro ones red and blue Misogyny To Be Considered a Hate Crime For First Time in U.K. retro ones red and blue

retro ones red and blue Gold White Black Red Blue Beige Grey Price Rose Orange Purple Green Yellow Cyan Bordeaux pink Indigo Brown Silver