After I found some crayons appropriate for Luke's age (or as close to his age as I could get. He's almost the size of a 24 month old so that counts, right?), we set to work. I helped him practice on one page just so he'd know what to do and then he was on his own.
He seemed to have an okay time coloring. It's amazing to me that kiddos even his age already have a preference to which colors they like to use. Luke gravitated to orange. I could offer him any other color, but he'd take orange every time if I let him.
Here's the final product. It's already been placed in a protective plastic sleeve and stored for safe keeping in his memory box. So proud of my boy!