hello debale,
I've introduced several Aubretia small plants into my garden over the last few months. The advice you read is that they have to have full sun but I reckon they will tolerate partial shade. I don't think they would be that particular about what soil they grow in.
I have been told that they are hard to grow from seed but I don't know how true that is.
The best advice I have been given is to cut them back fairly hard after flowering as they can get leggy.
Hope that helps