Good, eh eh, cause if you have to ask, it ain't that noticeable.
Look at the center of the E in Haunted, on the left edge. Looks to be a tiny bit of blue, and I didn't notice it myself on the book; not until looking at the blown up scan when I posted it here.
I might be wrong but that looks like a printing error not CT to me.
I ran my finger over it, and didn't feel any roughness; it was as smooth as the rest of the cover, and there is no visual indication on the back of the cover either, perhaps you're right; works for me!
I think it has to be used to make the book more visually improved on purpose to be considered ct, doesn't it? I wouldn't think this would be ct.