CSS Color Leak

Detection approach

CSS ActiveText rendering anomaly detected. The browser fails to render standard OS system colors (like ActiveText) correctly, defaulting to solid red or anomalous RGB values. This is a known CSS leak in Headless Chromium environments.

How this helps detect bots

This signal is assessed with other independent session, browser, and network evidence. A single anomaly is a lead, not a verdict; corroborating anomalies make automated traffic more likely.

Legitimate traffic to consider

Users with high-contrast custom accessibility themes or system color overrides (e.g., night mode).