Burp highlighting no longer touches your requests
With Phoenix Highlighter v2.0.0 in Burp, every container with an open tab gets its own Burp proxy listener. Burp colours each request and notes the container name by the listener it arrives on, so nothing is added to the request and nothing can leak to the target. Several tabs of a container share one listener, and it closes 15 seconds after the container's last tab.

One switch, automatic pairing
* The Highlighter tile turns highlighting on or off; its gear opens pairing. A dot on the tile shows the connection at a glance (green connected, amber connecting, red failed).
* PhoenixBox finds the Highlighter in Burp and asks to pair: click Allow once in Burp's PhoenixBox tab. A pairing string remains as a fallback.
* The Highlighter window downloads the latest PhoenixBoxHighlighter.jar directly.
* Still works with Highlighter v1.x: unpaired, containers send only the X-MAC-Container-Color header, as before. If highlighting was on in 3.0, it stays on.

Fixes
* Proxy: traffic is routed and authenticated the way the popup says; service-worker requests take the container's proxy; the extension's own requests go direct.
* Containers: hiding, un-hiding and moving tabs work across every window, and your container colours, icons and names are no longer overwritten.
* Sync backs up container changes again, keeps deleted presets deleted, and two devices no longer trigger each other endlessly.
* Accessibility fixes, a single theme setting, and a package cut from 11.4 MB to 1.5 MB.

See the CHANGELOG for the full list.

• Regular users — install the signed build from Firefox Add-ons. Works on any Firefox 142.0 or later (standard release, ESR, Developer Edition, or Nightly).
• Developers — download the .xpi asset below and load it in Firefox Developer Edition (or Nightly).
• Burp highlighting — download PhoenixBoxHighlighter.jar (v2.0.0+) and add it in Burp via Extensions → Installed → Add (type Java), replacing v1.x.

What's New in v3.0

Route Multiple Containers Through the Global Proxy
You can now promote more than one container to the global proxy at once. The global proxy fallback applies to every promoted container, while the rest stay on a direct connection.

"Paint the Burp" is now "Highlighter"
The Burp Suite request-highlighting feature has been renamed to Highlighter for clarity. The first-time setup modal links directly to the PhoenixBoxHighlighter.jar download, and the onboarding flow has been polished.

Redesigned Interface

Quick controls (Proxy / Highlighter / User-Agent) are now compact icon toggle tiles.
Refreshed container list, detail, and edit views — color-tinted rows, icon chips, tab-count badges, and a live identity preview.
The "Always open this site in…" page-action picker now matches the redesigned container list: rounded rows, accent hover, icon tiles, and a chevron.
New Theming Options

New white accent, plus mode-aware black/white accents that automatically swap when you toggle dark/light.
The logo "Box" wordmark accent can follow the theme hue or use its own color, and persists across sessions.
Under the Hood

Accessibility and consistency pass across the accent and control UI.
Internal logging cleanup and CSS modernization.

Here's a shorter version for the AMO Release Notes field:

PhoenixBox 2.1.0 - New Features

Promote icon - one container to use the global proxy (new ↑ button) — the proxy applies only to that container.
Quickly hide/show a container's tabs in one click from the list (eye icon).
Container list now shows open vs. hidden tab counts.

Fixed

Hidden tabs now reliably reopen when you un-hide a container.

What's New in v2.0

Redesigned Delete Container Flow
The delete button has been moved from the edit form into the action bar. Deleting now requires a two-step confirmation — click the trash icon, then
confirm — preventing accidental deletions.

Endpoint Extraction Tool
New built-in tool to extract and review endpoints discovered during testing sessions, directly from the extension.

Unified UI Theme System
All extension pages (Options, Page Action, Confirm) have been rebuilt with a consistent design system — unified accent colors, dark/light mode, and
improved typography across the board.

Accent Color Theming
The popup now supports custom accent colors and hue-based theming, letting you personalize the UI to your workflow.

Quick-Delete from Container List
Containers can now be deleted directly from the container list without entering the edit screen.

Proxy Shortcuts
Added a quick shortcut to disable a container's proxy from the detail view without opening settings.

Bug Fixes
- Global proxy preset now correctly appears in the quick-switch when no per-container proxy is set
- Favicon icons removed from tab rows in the container detail view