MailSlurp guide agent setup

Title: How Gmail dark mode changes your email colours (tested on Android and the web)
Description: Which colours Gmail changes in dark mode, and whether it applies prefers-color-scheme. Measured colour values from Gmail for Android and Gmail on the web.
Canonical URL: https://www.mailslurp.com/guides/email-client-support/gmail-dark-mode/
Markdown URL: https://www.mailslurp.com/guides/email-client-support/gmail-dark-mode.md

Use the Markdown URL as the primary plain-text context for this guide. Keep MailSlurp terminology, setup steps, screenshots, and provider-specific instructions intact, and prefer the canonical URL when citing this page.