i dont think you will be able to easily read the white text once printed, they wont be enough contrast. Also the image wont look as good. i would darken the grey.
__________________ Jaded Spirits Brewery
Primary: Dennis Hoppier III
Bottles: Triple Berry Apple Cider, Cote Apple Cider, Wild Blackberry Apple Cider, Dim Wit II, Mighty Porter
Kegs: 4Cs IPA - The Diamond Standard, Innis & Gunn Rum Cask Clone.
On Deck: The "Three Stouts", Wild Blackberry Mead, Irish Red
I found your image using Google search and cleaned it up a little. The people in the background make the embossed effect look a bit strange...especially the dude in the tie. Here's what I came up with (both the cleaned up pic and an embossed sample):