Add keyword lists.

color-schemes/editor/visualstudio.json

@@ -33,5 +33,10 @@
         "error-indicator" : "#60ff0000",
         "error-indicator-outline" : "#ff000000",
         "edge" : "#ffffff"
+    },
+    "keywords" : {
+        "keyword-set1" : "if else let for module function true false undef include use",
+        "keyword-set2" : "abs sign rands min max sin cos asin acos tan atan atan2 round ceil floor pow sqrt exp len log ln str chr concat lookup search version version_num norm cross parent_module dxf_dim dxf_cross",
+        "keyword-set3" : "cube sphere cylinder polyhedron square circle polygon text minkowski hull resize child echo union difference intersection linear_extrude rotate_extrude import group projection render surface scale rotate mirror translate multmatrix color offset"
     }
 }