diff --git a/phpBB/styles/prosilver/theme/buttons.css b/phpBB/styles/prosilver/theme/buttons.css
index 0a6619b499..9fed9e128b 100644
--- a/phpBB/styles/prosilver/theme/buttons.css
+++ b/phpBB/styles/prosilver/theme/buttons.css
@@ -40,6 +40,16 @@
 
 /* Posting page styles
 ---------------------------------------- */
+.button-form,
+.button-form-bold {
+	font-family: 'Lucida Grande', Verdana, Helvetica, Arial, sans-serif;
+	border-radius: 0;
+}
+
+.button-form-bold {
+	font-weight: 700;
+}
+
 .button-search,
 .button-search-end {
 	border-radius: 0;
diff --git a/phpBB/styles/prosilver/theme/colours.css b/phpBB/styles/prosilver/theme/colours.css
index 5f2454ff00..c01332cd00 100644
--- a/phpBB/styles/prosilver/theme/colours.css
+++ b/phpBB/styles/prosilver/theme/colours.css
@@ -674,6 +674,29 @@ dd.profile-warnings {
 	color: #8f8f8f;
 }
 
+.button-form,
+.button-form-bold {
+	border-color: #666666;
+	-webkit-box-shadow: none;
+	box-shadow: none;
+	color: #333333;
+}
+
+.button-form:hover,
+.button-form-bold:hover {
+	border-color: #d31141;
+	color: #d31141;
+	text-shadow: none;
+}
+
+.button-form:focus,
+.button-form-bold:focus {
+	border-color: #0a8ed0;
+	color: #0a8ed0;
+	text-shadow: none;
+}
+
+
 .button-secondary:focus,
 .button-secondary:hover,
 .button:focus .icon,