Hey there guys.

The other day I was trying to export an obj with vertex colors in hopes that it would work within the unreal engine. It does not work.

Is there no support for vertex color exporting within the obj format? ZBrush seems to do it just fine, but then i am no longer leveraging the procedurality of houdini.

any tips?

OBJ format specification doesn't support vertex colors. Zbrush uses some hacks in their exporter (they write vertex colors in comment strings)
Some packages can read this data, some don't

It's best to use the FBX format.