diff --git a/readme.md b/readme.md
index 1410e0477..c47a15afc 100644
--- a/readme.md
+++ b/readme.md
@@ -23,7 +23,7 @@ cordova plugin add cordova-plugin-mfp
 ionic cordova plugin add cordova-plugin-network-information
 
 ## memory leak
-set NODE_OPTIONS=--max_old_space_size=10096
+set NODE_OPTIONS=--max_old_space_size=99996
 ```
 
 ## BUG
diff --git a/src/global.scss b/src/global.scss
index 58fc73799..9b9ecfed5 100644
--- a/src/global.scss
+++ b/src/global.scss
@@ -54,13 +54,13 @@ td.monthview-primary-with-event {
 
 // current date
 td.monthview-current{
-    border-bottom: 1px solid lightskyblue !important;
+    border-bottom: 1px solid var(--monthview-selected) !important;
     color: black !important;
     background-color: white !important;
 }
 // selected date =============================
 td.monthview-selected {
-    background-color: lightskyblue !important;
+    background-color: var(--monthview-selected) !important;
     color: white !important;
 }
 
@@ -1003,7 +1003,7 @@ background: rgb(92, 92, 92);
 
 // calendar
 .mat-calendar-body-selected {
-    background-color: #42b9fe !important;
+    background-color: var(--mat-calendar-body-selected) !important;
 }
 
 // select background
@@ -1073,7 +1073,7 @@ background: rgb(92, 92, 92);
 
 
 .mat-selected {
-    background-color: #87cefa !important;
+    background-color: var(--mat-selected) !important;
     span {
         color: white !important;
     }
diff --git a/src/theme/variables.scss b/src/theme/variables.scss
index 9e2944df0..e9f227cb0 100644
--- a/src/theme/variables.scss
+++ b/src/theme/variables.scss
@@ -639,6 +639,9 @@ body {
   --header-bottom-line-background-image: linear-gradient(to right, #c63527, #ffb81c, #ffc72c);
   --font-awesome: #ffb81c;
   --font-awesome-1: #c63527;
+  --mat-selected: #c63527;
+  --mat-calendar-body-selected: #c63527;
+  --monthview-selected: #c63527;
 
   --color: #d9d9d9;
   --color2: #f0f0f0;
@@ -698,6 +701,9 @@ body {
   --button-text-color: #white;
   --header-tab-top-border: white;
   --header-tab-text-white: white;
+  --mat-selected: #87cefa;
+  --mat-calendar-body-selected: #42b9fe ;
+  --monthview-selected: lightskyblue;
   --header-container-background: linear-gradient(
     270deg,
     var(--color2) 0%,