Poor Harley Quinn - imagine how freaked out you'd be if suddenly you were seeing the world in black and white. All these figures are from Mattel's Batman Legacy line. The Batman and Catwoman two-pack really is done in grayscale; we didn't cheat that. On the other hand, we did pump up the colors on Harley, so there'd be even more of a contrast than there is already.
The title of this toon is a reference both to the Batman comic Shadow of the Bat, and to Fifty Shades of Grey, the porno Twilight fanfiction that, statistically speaking, your mom has probably read.
Want to know how bad the book is? The exchange between Batman and Catwoman is actual, unedited dialogue from the book. That's the way the author thinks people talk! And 100,000 people have paid money to read it! Gah! At that point, having a stroke might be preferable.