STARBUCKS fans may have noticed that some baristas wear special aprons that are different colors from the iconic green.

What Starbucks regulars might not know is that each apron color has a special meaning behind it, including one that means the employee is a Coffee Master.

The green Starbucks apron, which is the chain's signature color, is the one you will likely see most employees wearing.

It can be dressed up based on the employee's accomplishments.

For instance, if someone was in the military they could get special patches on their apron, like an American flag, according to Delish.

If you happen to see a mortarboard embroidered apron, you can bet that employee is a graduate of the Starbucks College Achievement Plan.

Introduced in the early 90s, the black apron is reserved for more seasoned employees. These are the people referred to as 'Coffee Masters,' who have expertise in Starbucks coffee.

To become a master of coffee, they have to be selected for the program and be able to answer all coffee-related queries on the following: Taste, roast, acidity, and body profiles, as well as growing methods, varietals, food pairings, how temperature affects taste, and more.

The red aprons were released for the holiday season, while orange aprons are used to celebrate Kings Day in the Netherlands.

Purple aprons, on the other hand, are for barista champions, and there are only 26 chosen every year, according to Taste of Home.

Just like you may not have noticed the different Starbucks apron colors, another thing that might have gone over your head is how the Starbucks logo has changed over the years.

When the first Starbucks store opened in 1971, the logo looked quite different from today.

The first logo featured the same long-haired mermaid or 'siren' that we're all used to.

Back then though, she had a bare chest and large tail on display.

Instead of its famous green shade, the first logo was also brown and had the brand's full name, 'Starbucks Coffee, Tea, and Spices' on display.

In 1987, Starbucks merged with the expresso brand Il Giornale which inspired a new logo.

This is when green became the company's signature color, the siren began to look more modern, and their name was shortened to Starbucks Coffee.

The siren became more pronounced in the 1992 logo, but the Starbucks name was still a part of it.

This is the logo the brand is most known for, and it would serve as the Starbucks symbol for almost 20 years.

I've found major designer heels dupe in Dunnes - they're identical & €960 cheaper

Bride is criticized for her see-through wedding gown

I tried a viral manicure hack using bargains - it went so badly my nails fell off

I tried Dunnes' €10 emerald green midi skirt & it's perfect for festive season

©News Group Newspapers Limited in England No. 679215 Registered office: 1 London Bridge Street, London, SE1 9GF. "The Sun", "Sun", "Sun Online" are registered trademarks or trade names of News Group Newspapers Limited. This service is provided on News Group Newspapers' Limited's Standard Terms and Conditions in accordance with our Privacy & Cookie Policy. To inquire about a licence to reproduce material, visit our Syndication site. View our online Press Pack. For other inquiries Contact Us. To see all content on The Sun, please use the Site Map. The Sun website is regulated by the Independent Press Standards Organisation (IPSO)