Couple more vars in progress

src/definitions/elements/progress.less

@@ -54,7 +54,7 @@
 ---------------*/
 
 .ui.successful.progress .bar {
-  background-color: #73E064 !important;
+  background-color: @positiveColor !important;
 }
 .ui.successful.progress .bar,
 .ui.successful.progress .bar::after {
@@ -62,7 +62,7 @@
 }
 
 .ui.warning.progress .bar {
-  background-color: #E96633 !important;
+  background-color: @yellow !important;
 }
 .ui.warning.progress .bar,
 .ui.warning.progress .bar::after {
@@ -74,7 +74,7 @@
 ---------------*/
 
 .ui.failed.progress .bar {
-  background-color: #DF9BA4 !important;
+  background-color: @negativeColor !important;
 }
 .ui.failed.progress .bar,
 .ui.failed.progress .bar::after {