When I originally began making hundreds chart activities, I didn't think to always try to fill in the background color so students would be engaged with the majority of the numbers to 100. I basically only required them to color the item that would be revealed in the picture. Now, I always try to add background colors.
I updated my Leprechaun chart listing to include a new chart, along with the old one. You can see the differences in the picture below. The old one (on the right) is much easier because of all the white space. However, it would also be better for differentiating instruction for kiddos who seem to be overwhelmed by nearly 100 numbers. I'm leaving it up to you to decide which one to use with your class if you choose to purchase it. :) If you've already purchased the chart, but sure to go back and download the new update.