It's been a long time since I posted a link to an ''ordinary" book of hours. Here's one of my favorites, at the wonderful Digital Scriptorium -- HM 48. Strongly recommend you try the Medium or, better yet, Large images.
Trinity College, Dublin, owns the massive, marvelous Book of Kells. After years of being notably stingy with its images, Trinity has at long last placed every single page of the Book online.
Start here and feast your eyes. (Note: if these early "canon tables" don't strike your fancy, just stick with it and your patience will be rewarded.)
One of the most colorful pages is the portrait of St. Matthew, at the beginning of the Gospel attributed to him.
There are two pages (here and here) where an anonymous colorist started to add decoration to the pages but left them incomplete.
This portrait of a grieving Mary Magdalene is unusual for the close attention paid to her face and expression. The detail and sumptuousness of her clothing are also remarkable. This painting was done by Colijn de Coter c. 1500. It hangs in the Museum of Fine Arts, Budapest, Hungary.