chore: add B50 ad lih blue color var

Author: AbhishekA1509

src/css/base.scss

@@ -2469,6 +2469,10 @@ textarea,
     background-color: var(--N50);
 }
 
+.bc-b50 {
+    background-color: var(--B50);
+}
+
 .c-n50 {
     color: var(--N50);
 }
@@ -4118,7 +4122,7 @@ textarea::placeholder {
 
 .bulk-selection-widget {
     border: 1px solid var(--B500);
-    background: rgba(240, 247, 255, 0.80);
+    background: var(--light-blue);
     box-shadow: 0px 4px 8px 0px rgba(0, 0, 0, 0.35);
     backdrop-filter: blur(5px);
 }

src/css/colorPalette.scss

@@ -10,6 +10,7 @@
     --B300: #72ace6;
     --B200: #abcff3;
     --B100: #e5f2ff;
+    --B50: #F0F7FF;
     --N900: #000a14;
     --N800: #1d2730;
     --N700: #3b444c;
@@ -57,4 +58,5 @@
     --tippy-card-black-bg: #2d3452;
     --terminal-bg: #0b0f22;
     --inprogress-orange: #ff7e5b;
+    --light-blue: #f0f7ff;
 }