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+++ b/doc/misc/gnus-faq.texi
@@ -742,6 +742,7 @@ POP3 mail source. See @pxref{Mail Source Specifiers} for VALUE.
* FAQ 4-14:: I don't like the way the Summary buffer looks, how to
tweak it?
* FAQ 4-15:: How to split incoming mails in several groups?
+* FAQ 4-16:: How can I ensure more contrast when viewing HTML mail?
@end menu
@node FAQ 4-1
@@ -1185,6 +1186,21 @@ from using them):
@end example
@noindent
+@node FAQ 4-16
+@subsubheading Question 4.16
+
+How can I ensure more contrast when viewing HTML mail?
+
+@subsubheading Answer
+
+Gnus' built-in simple HTML renderer (you use it if the value of
+@code{mm-text-html-renderer} is @code{shr}) uses the colors which are
+declared in the HTML mail. However, it adjusts them in order to
+prevent situations like dark gray text on black background. In case
+the results still have a too low contrast for you, increase the values
+of the variables @code{shr-color-visible-distance-min} and
+@code{shr-color-visible-luminance-min}.
+
@node FAQ 5 - Composing messages
@subsection Composing messages