I have a 1591CTBU in front of me here, the surfaces are not textured and the blue is relatively light in colour.
I'd say it depends on the colour of your LCD's backlight. A white or blue one should be readable, green might work as well.
I've used these enclosures with green 7 seg. LED displays, that works well.
I'd say give it a shot and buy one to try it out, they're not that expensive.
If you want I could rig up a MCU + LCD display and take some pictures tonight.