Index: node_modules/d3-scale-chromatic/src/sequential-single/Greys.js
===================================================================
--- node_modules/d3-scale-chromatic/src/sequential-single/Greys.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-scale-chromatic/src/sequential-single/Greys.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,14 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+  "f0f0f0bdbdbd636363",
+  "f7f7f7cccccc969696525252",
+  "f7f7f7cccccc969696636363252525",
+  "f7f7f7d9d9d9bdbdbd969696636363252525",
+  "f7f7f7d9d9d9bdbdbd969696737373525252252525",
+  "fffffff0f0f0d9d9d9bdbdbd969696737373525252252525",
+  "fffffff0f0f0d9d9d9bdbdbd969696737373525252252525000000"
+).map(colors);
+
+export default ramp(scheme);