Simplification

app/src/main/java/eu/faircode/email/MessageHelper.java

@@ -962,24 +962,16 @@ public class MessageHelper {
                     HtmlHelper.autoLink(document, true);
                 }
 
+                StringBuilder style = new StringBuilder();
+
                 if (compose_color != Color.TRANSPARENT)
-                    document.head().append("<style>* {color: " + HtmlHelper.encodeWebColor(compose_color) + ";}</style>");
-
-                if (!TextUtils.isEmpty(compose_font)) {
-                    List<Node> childs = new ArrayList<>();
-                    for (Node child : document.body().childNodes())
-                        if (TextUtils.isEmpty(child.attr("fairemail"))) {
-                            childs.add(child);
-                            child.remove();
-                        } else
-                            break;
+                    style.append("* {color: ").append(HtmlHelper.encodeWebColor(compose_color)).append(";}").append('\n');
 
-                    Element div = document.createElement("div").attr("style",
-                            "font-family:" + StyleHelper.getFamily(compose_font));
-                    for (Node child : childs)
-                        div.appendChild(child);
-                    document.body().prependChild(div);
-                }
+                if (!TextUtils.isEmpty(compose_font))
+                    style.append("* {font-family: ").append(StyleHelper.getFamily(compose_font)).append(";}").append('\n');
+
+                if (style.length() > 0)
+                    document.head().append("<style>" + style + "</style>");
 
                 document.select("div[fairemail=signature]").removeAttr("fairemail");
                 document.select("div[fairemail=reference]").removeAttr("fairemail");