[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Overlay](./puppeteer.protocol.overlay.md) > [GridHighlightConfig](./puppeteer.protocol.overlay.gridhighlightconfig.md) > [columnLineColor](./puppeteer.protocol.overlay.gridhighlightconfig.columnlinecolor.md) ## Protocol.Overlay.GridHighlightConfig.columnLineColor property The column line color (default: transparent). Signature: ```typescript columnLineColor?: DOM.RGBA; ```