Thank you both for your answers. I already have some of criquettes stuff but I think the cliff addition will be very nice indeed so thanks for the tip.
Still I would love to be able to do more punctual changes to my neighborhood. Like having part of the cliffs white and other brown and not all changed at once. Wonder if I'm the only one interested in such a thing or if it's just to hard to create it.
I already went through the whole category of Neighborhood items (103) but it's mostly default replacements and some objects. The game has some flowers by default also some dirt and darker grass that can be placed just like the terrain tool on lots. Wonder why there isn't more of that.
Maybe give this thread a few more days and hope someone knows some more items