<https://diannecraft.org/product-category/learning-products/reading-transparencies/>
<http://schema.org/description>
"Using a darker colored transparency over a reading page, such as blue or green, there is less of a discrepancy between black words & the white background."
<https://diannecraft.org/product-category/learning-products/reading-transparencies/?product_count=96&product_orderby=name&product_order=asc>