Hi - I saw a nice climbing plant on a rock wall while out walking the dog and would like to know what it is so I can grow it on my wall. It has small green leaves about the size of a dime which have 5 points, somewhat like an ivy leaf or a maple leaf. The flowers look like miniature snapdragons, they are light purple with a bit of white and yellow and are about 0.75cm long and 0.5cm across, each one. The stems are round and a little bit reddish. Any ideas? Thanks!