Generally this is never an issue. Light from a window or artifical electric source in a installation location can sometimes seemingly suggest a lighter color or less sheen in some products. All of these products are Styrofoam Products and Styrofoam Ceiling Tiles are generally in white and can easily be painted in any water based color using a roller, brush as preferred except for professional sprayer use.
On Rare Occasions due to the required Manafacturing Process, Materials Involved there can, very rarley, be some customers who raise a question of some slight suggestion of variances involving Sheen. The Factory Manufacturing Process takes all precautions to insure uniformity and the Shipping & Handling Process allows inspection of each package of 8 pre wrapped in plastic Ceiling Tiles to elimnate within reason any problems of this nature or any damage. However on very rare instances some customers (perhaps one in twenty-five hundred) may notice a seemingly duller sheen on some ... more.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.