Change the colors for .custom-body class to match the colors on the body tag. (#2775)

Co-authored-by: MPopov <desig9stein@gmail.com>
Co-authored-by: Galina Edinakova <gedinakova@infragistics.com>
Co-authored-by: Simeon Simeonoff <sim.simeonoff@gmail.com>

Author: 4 people

projects/app-lob/src/app/index/docs-layout.component.scss

@@ -1,6 +1,6 @@
 ::ng-deep {
-    .custom-body {
-        color: var(--igx-grays-800);
-        background-color: var(--igx-background-500);
-    }
-}
+	.custom-body {
+		color: var(--igx-surface-500-contrast);
+		background: var(--igx-surface-500);
+	}
+}

src/app/index/docs-layout.component.scss

@@ -1,6 +1,6 @@
 ::ng-deep {
-    .custom-body {
-        color: var(--igx-grays-800);
-        background-color: var(--igx-background-500);
-    }
-}
+	.custom-body {
+		color: var(--igx-surface-500-contrast);
+		background: var(--igx-surface-500);
+	}
+}