You don`t paint it, the colour is in the concrete, jetwash the area, let it dry and then use a sweeping brush to apply the sealer, it`ll come up like new
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Yes do not paint it.....Get hold of the correct sealer (try colorpave)and if any of the colour has worn off then you can add some of the main colour of the impressed concrete to the sealer,Color pave may be able to sell you a small amount of the powder dye.i had a slate grey colour drive that had worn and I got hold of some powder dye and added it to the sealer and then brushed it on(making sure you keep stirring the mix of dye and sealer as it will settle at the bottom if you don't ) It will never look as good as from day 1 but I feel if you paint it then you may have more probs of peeling ect.