add new icon rules to icons.css

core/css/icons.css

@@ -47,10 +47,12 @@
 .icon-checkmark {
 	background-image: url('../img/actions/checkmark.svg');
 }
-
 .icon-checkmark-white {
 	background-image: url('../img/actions/checkmark-white.svg');
 }
+.icon-checkmark-color {
+	background-image: url('../img/actions/checkmark-color.svg');
+}
 
 .icon-close {
 	background-image: url('../img/actions/close.svg');
@@ -82,6 +84,16 @@
 	background-image: url('../img/actions/edit.svg');
 }
 
+.icon-error {
+	background-image: url('../img/actions/error.svg');
+}
+.icon-error-white {
+	background-image: url('../img/actions/error-white.svg');
+}
+.icon-error-color {
+	background-image: url('../img/actions/error-color.svg');
+}
+
 .icon-external {
 	background-image: url('../img/actions/external.svg');
 }