Researchers at McNiel-PPC have patented  a sanitary napkin comprising:
- a body facing surface;
- a portion adapted to be arranged over the vaginal opening during use;
- a first colored portion, said colored portion extending over at least the portion of the napkin to be placed over the vaginal opening during use;
- a noncolored portion;
The first colored portion has a first color as measured from said body facing surface prior to staining; And a second color as measured from said body facing surface after staining. The first color has an average L value greater than 80; and wherein a Δa* between said first color and said second color is less than 18.