There are different colour cables but on the whole many aerial engineers will use white or black cable depending on the colour of the house,to attach the cable to a wall you will need cable tacks which you should run all the way down at a good 300mm apart, this is to look tidy but most important that it does not fly around in the wind and get caught on anything. you will need good quality cable, double shielded 75 ohm cable is best, examples; made by webro and raydex though there are more manufactures coming on the market all the time. You will need connectors to connect to your aerial and also to your TV, the connectors you will need will depend on the aerial but some aerials will have connectors already on them.