Compared to plain concrete, coloured concrete is more expensive. This kind of mixture is employed for applications where a certain colour is required rather than being able to see the aggregate. Depending on the look you want, this mix can either be troweled, sprayed or floated onto the surface. Coloured concrete is available in the range of $75 to $90 per square meter, or up to $150 if you choose a creative option like stamps or stencils. There is no difference in price for concrete that is troweled, sprayed on, or floated since each is done separately depending on the desired appearance.