I'm not Catholic either, but for whatever reason, my church has revived a number of rituals normally associated with Catholicism. We take Communion not every week, but the first week of every month, which is six times more often than when I was growing up (I think most Protestant branches were down to just Easter and Christmas for a while) and we brought back ashes on Ash Wednesday a few years ago. As I sit here typing, I have ashes on me.
It's fine with me. I don't think of it as specifically Catholic, more like "Old-school Christian" in general.