Leonardo, thanks for the idea!
I'd like to do not be forced to use that box; instead, I could change the color of the text - as you can note, there are two colors, one for the shadow and one for the text; if you could suggest some color combination, I'm all ears!
Also, think this is a 50% reduced version; after you have suggested other possible text colors, I'll post a full version, so you could evaluate both text and screenshot comparison.