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