Jamie

Sketching obsessed.

A page of highlighter swatches in a Stillman and Birn Alpha sketchbook. Stabilo NatureColors highlighters form overlapping diagonal stripes spiraling inward on the left in soft earthy tones of Beige, Earth Green, Mud Green, Sienna, Umber, and Warm Grey.. Zebra Mildliner highlighters appear as clean parallel horizontal stripes on the right in Mild Beige, Mild Cool Gray, Mild Cream, Mild Dusty Pink, and Mild Olive. The word HIGHLIGHTERS is lettered in bold across a sage green block at the bottom right.

NatureColors Highlighters

April arrived with a delivery from JetPens.

I’d ordered Stabilo NatureColors highlighters and Zebra Mildliners for my planner, but the moment they arrived I wanted to know how they’d behave on Alpha paper. Are they waterproof? Could they work as a sketching underlayer to block in a scene before adding watercolor or ink on top? Swatching each pen was essential, so of course I turned the whole test into a page.

A page of highlighter swatches in a Stillman and Birn Alpha sketchbook. Stabilo NatureColors highlighters form overlapping diagonal stripes spiraling inward on the left in soft earthy tones of Beige, Earth Green, Mud Green, Sienna, Umber, and Warm Grey.. Zebra Mildliner highlighters appear as clean parallel horizontal stripes on the right in Mild Beige, Mild Cool Gray, Mild Cream, Mild Dusty Pink, and Mild Olive. The word HIGHLIGHTERS is lettered in bold across a sage green block at the bottom right.
Stabilo NatureColors and Zebra Mildliner highlighter swatches — Stillman & Birn Alpha, April 2026

NatureColors: Beige, Earth Green, Mud Green, Sienna, Umber, and Warm Grey.
Mildliners Calm Set: Mild Iris, Mild Mimosa Yellow, Mild Mint, Mild Moss Green, and Mild Smoke Red.
Mildliners Natural Set: Mild Beige, Mild Cool Gray, Mild Cream, Mild Dusty Pink, and Mild Olive.

The NatureColors went down in somewhat random lines, that became this squarish shape. The Mildliners in simple parallel lines on the right. I did test them with water, and they are waterproof. The underlayer idea, to make a quick highlighter sketch, then build color on top, is still sitting in the “to try” pile. Documenting a delivery this way is considerably more interesting than sketching each pen! I do love making color blocks. Or in this case, color stripes.

A double page spread in a Stillman and Birn Alpha sketchbook. The left page shows overlapping diagonal highlighter stripes in Stabilo NatureColors forming a spiral composition in soft earthy tones, with a narrow Caran d'Ache Museum Aquarelle pencil swatch strip along the left edge. The right page shows Zebra Mildliner stripes in clean parallels alongside the word HIGHLIGHTERS in bold lettering, with handwritten journaling and weather entries for April 1 through 10, 2026 on the facing page.
Stabilo NatureColors and Zebra Mildliner highlighter swatches with Caran d’Ache Museum Aquarelle — Stillman & Birn Alpha, April 2026

The strip of color in the middle of the page is a Caran d’Ache Museum Aquarelle pencil, Sepia 10%. I’m a little obsessed with Sepia. It fits nicely as a soft, light neutral color. Museum Aquarelles are exceptionally soft and produce beautiful washes, and this one is quietly auditioning for a place in my standard travel kit. I may have to experiment with them more.

The right page of this spread has a little journaling alongside the first ten days of April weather. I’m working on adding a bit more journaling to my sketchbook pages, to hold memories, and capture moments.

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