diff --git a/yoshi-theme.el b/yoshi-theme.el
index a45c3d4..44e6cfc 100644
--- a/yoshi-theme.el
+++ b/yoshi-theme.el
@@ -66,10 +66,13 @@
    `(font-lock-doc-face ((t (:foreground ,lgreen :inherit unspecified))))
    `(font-lock-function-name-face ((t (:foreground ,lpurple))))
    `(font-lock-keyword-face ((t (:foreground ,lyellow))))
+   `(font-lock-negation-char-face ((t (:foreground ,lred))))
+   `(font-lock-regexp-grouping-backslash ((t (:foreground ,lred))))
+   `(font-lock-regexp-grouping-construct ((t (:foreground ,lpink))))
    `(font-lock-string-face ((t (:foreground ,lturquoise))))
    `(font-lock-type-face ((t (:foreground ,lorange))))
    `(font-lock-variable-name-face ((t (:foreground ,lblue))))
-   `(font-lock-warning-face ((t (:foreground ,lorange :weight bold :inherit unspecified))))
+   `(font-lock-warning-face ((t (:underline (:color ,lorange) :inherit unspecified))))
    `(gnus-button ((t (:foreground ,lorange :underline t))))
    `(gnus-group-mail-3 ((t (:inherit gnus-group-mail-3-empty :weight bold))))
    `(gnus-group-mail-3-empty ((t (:foreground ,lcyan))))