Choosing Web Colors using Grayscale Equivalents
    This Page Shows Both the 140 Named Colors & 216 Browser Safe Colors, Sorted by Ascending Grayscale Values
    Grayscale value=(red*0.30) + (green*0.59) + (blue*0.11)
    NOTE: The Named and Browser Safe colors total 356 colors. Because of duplicates within the 2 categories, there are 348 items here.