created common and added color scheme in colors.scss

src/common/styles/colors.scss

@@ -0,0 +1,7 @@
+:root {
+    --primary-color: #151515;
+    --heading-color: #484848;
+    --tertiary-color: #2cc38c;
+    --orange: #fab13e;
+    --pink: #ff7a5d;
+}