In reply to Kalna_kaza:
Something synthetic, that is well cut, not too thick, and not black. Mountain Equipment Hope Pants would be a good option.
Plus very light waterproof trousers for if it rains and you have to bail.
Footwear wise I always wear scrambling boots like Sportiva Trango Cubes. I find them better for edging, and they protect my ankles from being bashed around by scree.