Reflective Vinyl Signages:-

 Reflective vinyl is not self luminescent. Its properties aren’t

 apparent in normal daylight conditions. It’s specifically designed

 to be visible at night when stricken with artificial light such as

 that from motor vehicle headlights. This reflective property is

 what makes road signs legible after dark without the cost of

 electric illumination.  Because of this, there is sometimes a

 color shift that occurs when viewing reflective vinyl in different

 settings.

  White reflective for instance, is only white when it’s doing its thing. In normal daylight settings, it tends to look slightly grayish or pearlescent At the

  other end of the spectrum, black reflective has to look different when light hits it because black is the absence of light. So black reflective looks

  brownish when it reflects light after dark.