MailSlurp guide agent setup

Title: Dark mode colour map: what Gmail and Outlook for Android do to 99 email colours
Description: What Gmail and Outlook for Android do to 99 email colours in dark mode, measured from real screenshots. Look up what your brand colours become.
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Markdown URL: https://www.mailslurp.com/guides/email-client-support/dark-mode-colour-map.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.