Missing a few object-types in OSMBright

[spithost]

I use OSMBright as a basis for a tileserver to produce "watermaps" for the Netherlands but I'm missing some "water-related" objects in the resulting tiles that I get from my tileserver.
I figured out that they can be found in OSM with: man_made=breakwater and waterway=dam. Both to represented in the result as "landlike" objects, as they are "obstructions" in the water and are raising above the watersurface.
Could those two "object-types" be added to OSMBright in a future version? Maybe there are "related" object-types that spring to mind for more experienced OSM'ers.... but these are two that would be very nice to have for in my project.
If someone could provide me with some directions in how to do it myself in the future, I'm more then willing to do so but I'm very "green" in this area.