With just a finger, Janet Nunn added a blue sky above South Table Mountain's Castle Rock.

So, imagine what she can do with a library card.

On June 30, the Golden Library hosted “Dive Deep into Watercolors” with Nunn, a local watercolorist. The class was part of Jeffco Library’s “Dive Deep: Library Summer Challenge,” which includes several water- and ocean-themed activities for all ages this summer.

Nunn’s watercolors class is rotating around the library branches this summer, with Golden’s June 30 class being the ninth of 16. She’ll be back at the Golden Library July 22, and registration is required. For more information, visit jeffcolibrary.org.

Most of June 30's 16 participants were novices at watercoloring and painting in general. Golden’s Shilah Low was one of them, saying the library class seemed like a good opportunity to “see what it was all about.”

During the class, Nunn taught the 16 participants how to paint a trees-and-water scene and how to achieve the edges of Golden’s iconic mesa with some water, paint, and a library card.

“Let it do the work for you,” she said of the tools.

Nunn, who lives on Lookout Mountain, learned to paint from her grandma, who was an art teacher. She said she’s been painting forever, and “it was always watercolors."

She recalled spending summers doing fun art projects, and was grateful to share that experience via Jeffco’s libraries this summer. She said this is a season not only to go outside, but to go outside the box and try new things.

Participants like Lakewood’s Mary Fabisiak were doing just that during the June 30 class.

Fabisiak said she’s doing other “arts-and-craftsy things” before, but has never done watercolor painting. She said Nunn’s class was fun and she’d do it again. Classes like hers are a great way to “take advantage of all the library has to offer,” she continued.

Golden’s Jennifer Zerba had never taken a painting class before, although she’s attended a lot of library events with her children. She appreciated the chance to take a class for adults, although suggested family-style ones in the future.

“It’s creative — everything is unique,” she said of watercoloring.

Several participants felt the class was easier than expected, attributing it to Nunn's ability to make it look easy.

Kelley Matthews of Golden described Nunn as very encouraging teacher and a talented artist. She described how she first met Nunn at an art show and owns some of her work.

Wheat Ridge’s Barbara Matthews — no relation to Kelley — has also found Nunn’s style fascinating. Barbara has attended several of Nunn’s classes at the library branches this summer, and hopes to do more as she plans to use the painted greeting cards as gifts.

Unlike many of her fellow participants, Barbara has been dabbling in watercolors for 30 years. She enjoys critiquing her greeting card from each class and then going to Nunn’s one to continue improving.

“It puts me in a happiness state,” she said of watercoloring. “Creativity is good for the brain.”