I found this link where they seem to say that this method works pretty good. Has anyone ever tried it? Does it hold up? http://www.tamparacing.com/forums/paint-body-detailing/438627-paint-dye-dash.html EDIT: To clarify I'm talking like dash, door panels, etc, etc. Not seats or carpet.
I did this with se7enrex a few years back. Maybe we didn't do it right, but it made the interior fabric "abrasive" as though it was like a sandpaper. Not sure if its a die as much as a paint...
In my opinion, you don't want a perfectly smooth finish, that makes it look like spraypaint on a Neon or a Civic. A little texture is where its at.