A famous Disney Imagineer was the inspiration behind the whole makeover.
There are banners with scenes from "Cinderella" on the castle.
Carly Caramanna
Mary Blair was an iconic Disney Imagineer who worked closely alongside Walt Disney. She was also the mind behind the whimsical design of It's a Small World.
Once shades of muted blue and grey, the castle has been dramatically updated with bold royal-blue, light-pink, and shimmering-gold accent pieces inspired by Blair's original vision and design for Disney's "Cinderella" (1950).
The intricate details of the castle contain nods to the classic film. For example, the rose-gold banners are inspired by the ribbons that the mice use to help make Cinderella's dress.
On one of the castle's surrounding turrets, there are even banners with panels of concept art from the animated movie.
Disney created a new color scheme for the anniversary.
There are food and clothing items in the new color collection.
Carly Caramanna
At the center of the castle is a new "50" crest in a shimmering pastel shade, which Disney refers to as "EARidescent."
The new color scheme has inspired full collections of iridescent merchandise items and treats.
This isn't new for Disney though, the parks have been releasing food and apparel collections based on colors for years, including "Millennial Pink" and "Purple Potion."
The castle looks totally different - but equally stunning - in day and night.
The castle glows at night.
Carly Caramanna
When the sun bounces off the new iridescent features of the castle, it looks like it's sparking from all angles.
At night, the park icon is dramatically lit up in deep blues, pinks, and grays for a totally different look.
New character costumes were made to match the transformed castle.
The iconic Disney characters got new looks.
Carly Caramanna
Cinderella Castle wasn't the only thing that got a makeover for the celebration.
Mickey, Minnie, Goofy, Pluto, Donald, Daisy, and Chip 'n' Dale have new, custom-made character costumes in multi-toned, "EARidescent" fabrics with gold accents.
Park employees also got new name tags to go with the castle makeover.
The park employees are part of the anniversary transformation.
Carly Caramanna
Cast members — what Disney calls its park employees — also received upgraded name tags for the 50th celebration.
The new design features an iridescent sheen, a 50 in the middle of the castle logo, and gold accents.