Ryan,
I didn't see an attached image in this forum post.
You definitely don't want to use SUPERHATCHes in your DWG drawing. They look great, but on a landscape design scale they completely bog down a drawing to a crawl. That's why Land F/X areas don't support SUPERHATCHes.
You can use reference notes for your concrete and place them as areas with hatches. Once you do that, you're then able to simply use the colour render tool to have Land F/X automatically place the colour hatches behind each refnote area hatch.
Using colour render has 3 major benefits:
1. You can easily change the colour in the refnote info, and then rerun colour render to change all placed areas.
2. Colour render has an off button, so it's more drafting friendly (ever try to select things with a bunch of solid hatches in a drawing? It's horrible). Turning the solid colour on and off takes seconds and saves a lot of headache.
3. Your concrete is now a smart refnote object, and you can use more refnote tools on it like quick labels, schedules or area or volume, highlight, verify labels, or cost estimates.
Reference Notes (RefNotes): Getting Started
Site Color Render: Add Color to Area/Volume Reference Notes (RefNotes) Hatches
-Amanda