I have used a variety of methods. Most of them for mentioned. Here is a project where I used Hydraulic cement, It was still wet when this pic was snapped. When dry it looks just like aged concrete. You mentioned curbs, similar to Durhams and spackle, this stuff is great for building up depth.
Not a great deal of work involved either. Mix with water and apply. A good method for stripes, is the white out roller wheels used for correcting documents.