diff --git a/src/theme/pink-bluegrey.scss b/src/theme/pink-bluegrey.scss
index cd4df7b9f..580f9fdd8 100644
--- a/src/theme/pink-bluegrey.scss
+++ b/src/theme/pink-bluegrey.scss
@@ -1 +1,10 @@
 @import "~@angular/material/prebuilt-themes/pink-bluegrey.css";
+
+div.alert {
+    background-color: dimgray !important;
+}
+
+table.mat-table tbody tr:nth-child(even) {
+    background-color: dimgray !important;
+}
+
diff --git a/src/theme/purple-green.scss b/src/theme/purple-green.scss
index 40219543f..b3fcb75b0 100644
--- a/src/theme/purple-green.scss
+++ b/src/theme/purple-green.scss
@@ -1 +1,10 @@
 @import "~@angular/material/prebuilt-themes/purple-green.css";
+
+div.alert {
+    background-color: dimgray !important;
+}
+
+table.mat-table tbody tr:nth-child(even) {
+    background-color: dimgray !important;
+}
+