Pinstripe. Pinstripe is a tiny extension that draws a single 1px accent line in each window so you can tell your projects apart at a glance. Like Peacock, but quieter, one hairline of color instead of repainting the whole window.

Every window gets its own color, every project keeps it. Works in VS Code and Cursor.

How it works

• Pick a color once per project — it’s stored in the workspace settings, so the same project always shows the same line.
• Choose where the line lives: under the title bar, below the tabs, on the sidebar edge, the panel, the activity bar, or the status bar.
• Or turn on auto color and every project gets a deterministic color derived from its folder name, no picking needed.

Commands

Command	What it does
Pinstripe: Set Accent Color	Pick from favorites or enter any hex color
Pinstripe: Choose Line Placement	Pick where the line goes
Pinstripe: Remove Accent	Remove the line for this project

Settings

Setting	Default	Description
pinstripe.surfaces	["titleBar"]	Which surfaces get the 1px line
pinstripe.favorites	8 named colors	The palette shown in the color picker
pinstripe.autoColor	false	Auto-color every workspace from its folder name
pinstripe.promptOnNewWorkspace	true	Offer a color when a new workspace is opened

Install it from the VS Code Marketplace or grab the code on GitHub.