Reading Rulers Plain Window - pk of 10 - 10 Color Pack (one of each) Pack of all 10 colors: Yellow, Celery, Grass, Jade, Aqua, Sky, Purple, Magenta, Pink and Orange. Simple, uncluttered reading panel  for confident readers or use with diagrams/figures etc. New improved products, ideal for all ages and scientifically developed through a research based model Colors can be combined to create up to 30 tints