[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Overlay](./puppeteer.protocol.overlay.md) > [HingeConfig](./puppeteer.protocol.overlay.hingeconfig.md) > [outlineColor](./puppeteer.protocol.overlay.hingeconfig.outlinecolor.md) ## Protocol.Overlay.HingeConfig.outlineColor property The content box highlight outline color (default: transparent). Signature: ```typescript outlineColor?: DOM.RGBA; ```