Coloring enthusiasts are invited to gather at the Pella Public Library as they host Coloring for Adults to celebrate National Coloring Book Day. Activities will be held in the Library Meeting Room on Friday, August 2nd from 10:30 to 11:30 a.m., and free coloring books will be given away while they last. The library will provide coloring pages and supplies, or participants may bring their own. This program is free and open to the public.