Create a band of color (or even black or white) to lay the type on top to increase readability. A solid, wide stripe might seem too invasive within your design, so try lowering the opacity down to 65 percent. Create the bar on a separate layer so you can adjust not only the color, but also the opacity. Experiment with hues and the opacity amounts to find what fits right for the project. You could even use a texture or pattern for the band.
-Jennifer Foy, Unisub