Updated examples

snippets/randomHexColorCode.md

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+### randomHexColorCode
+
+Generates a random hexadecimal color code.
+
+Use `Math.random` to generate a random 24-bit(6x4bits) hexadecimal number. Use bit shifting and then convert it to an hexadecimal String using `toString(16)`.
+
+```js
+const randomHexColorCode = () => '#'+(Math.random()*0xFFFFFF<<0).toString(16);
+```
+
+```js
+randomHexColorCode() // "#e34155"
+randomHexColorCode() // "#fd73a6"
+randomHexColorCode() // "#4144c6"
+```