Use existing mini-lib for coloring

lib/sinon/color.js

@@ -17,3 +17,15 @@ exports.red = function (str) {
 exports.green = function (str) {
     return colorize(str, 32);
 };
+
+exports.cyan = function (str) {
+    return colorize(str, 96);
+};
+
+exports.white = function (str) {
+    return colorize(str, 39);
+};
+
+exports.bold = function (str) {
+    return colorize(str, 1);
+};

scripts/support-sinon.js

@@ -1,6 +1,12 @@
 "use strict";
 /* eslint-disable no-console */
-console.log(
-    "\u001b[32mLove sinon? You can now support the project via the open collective:" +
-        "\u001b[22m\u001b[39m\n > \u001b[96m\u001b[1mhttps://opencollective.com/sinon/donate\u001b[0m\n"
-);
+
+var color = require("../lib/sinon/color");
+
+var output =
+    color.green(
+        "Love sinon? You can now support the project via the open collective:"
+    ) +
+    color.white("\n > ") +
+    color.cyan(color.bold("https://opencollective.com/sinon/donate\n"));
+console.log(output);