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i want to add some colour to some outside cured concrete on a roadway in a green or brown which would be the best product
It really all depends on what you are looking for as the finished product. If you are just looking for a solid uniform colour the the best one to use would be the Solid colour stain (link below), if you are wanting a more translucent or mottled colour or to have a few colours together then the Smartcolour would be best.
Drew Palin