I live in the browser. When I can't tell which tab is active, I squint. So I built a small app that lets me design Chrome themes: colors, images for the frame and tabs, and a sane workflow to get a .zip I can install locally.
Features
- Five areas — Frame, toolbar, unselected tabs, address bar (colors only), and new tab page. Click each in the preview to edit.
- Colors and images — Color picker per area, or upload PNG/JPG for the wide strips and the new-tab background.
- Palettes — Preset schemes, plus palette extraction from a new-tab image so everything hangs together.
- Random — Spin up a harmonious palette when you don't want to think.
- Import — Load a theme you already made (
.zipor.crx) and tweak it. - Export — Named
.zipready forchrome://extensionswith Developer mode on.
How to use it
- Open the app and click an area in the preview (frame, toolbar, tabs, address bar, or new tab page).
- Set a color or switch to Image and upload art. Top strips work best around 3000×128 px; new tab backgrounds are happy at 1920×1080 or larger.
- Use Palettes, Random, or tints until it feels right.
- Name the theme, download the zip, open
chrome://extensions/, enable Developer mode, and drag the zip onto the page.
Fine print on tints, transparency, and troubleshooting matches what ships in the in-app help — if something looks off in Chrome, the preview is close but not pixel-perfect.
