Fans of the 'golden arches' are about to start seeing green. The fast-food chain McDonald's tweeted this week when fans of their Shamrock Shake can expect to enjoy their mint-flavored favorite, and it will be here sooner than you think.

The Tweet sent out on Wednesday this week by McDonald's let fans of the Shamrock Shake know that their wait was almost over, as the shake is expected to be available at participating restaurants beginning on February 21st, but the fast-food chain wasn't done with the announcement's surrounding the shake.

And starting Feb. 21, our Shamrock green hex code just might unlock another tasty secret. That is, if you know where to look. Be one of the first to figure out the mystery and you could get a little something special from us. - McDonald's Press Release

The #cbf2ac is the exact color tone of a Shamrock Shake, and if you can figure out what Ronald and the gang are talking about you might just get something 'sweeter'.

On top of the regular shake coming back Feb 21, fans of the Oreo Shamrock shake should also be pleased as that shake rendition is also on its way back Feb 21 according to the same news release from McDonald's that explained what #cbf2ac was all about.

Is it safe to say we might be wanting you to show us your shamrocks again??

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