# Find color in the format #abc or #abcdef

Write a RegExp that matches colors in the format `#abc` or `#abcdef`. That is: `#` followed by 3 or 6 hexadecimal digits.

Usage example:
```js
let regexp = /your regexp/g;

let str = "color: #3f3; background-color: #AA00ef; and: #abcd";

alert( str.match(regexp) ); // #3f3 #AA00ef
```

P.S. This should be exactly 3 or 6 hex digits. Values with 4 digits, such as `#abcd`, should not match.
