I can do it, but it wont look very nice no matter how it's done. I suggest just having the signs color changed if you don't like it pink. That, or I could do both for you to compare.
If you made the text, smaller and to the left of the sign and kept the original white images, they're kind of in the shape of people I guess. It's supposed to be an advertisement for a corporation/science effort for the Diverse Deux Ex RP we're working on launching.