Blue, red-orange and yellow are their primary colors, and the old "F" of the Florida Marlins has been replaced by an "M" with a fish figure attached to it, becoming the new logo.
The colors were chosen to reflect trendy Miami.
"We are the red-orange, of the breathtaking Miami sunsets and the citrus industry," Loria said. "The blue of the sky and the sea. And the yellow of the beautiful Miami sunshine."
There are three jerseys -- black, grey and red-orange.
"Both home and road jerseys will be emblazoned with the name Miami, to symbolize this historic move and embrace our city," Loria said. "We're proud of who we are, and where our home is, and we want to remind the whole world every time we take the field."
The uniforms were displayed in a fashion show at the new ballpark. Marlins players modeled each jersey.
First up was Hanley Ramirez, who sported the white home uniform. Josh Johnson wore the black jersey top, with white pants, and his No. 55 was in red-orange.
Anibal Sanchez was in grey, and Ricky Nolasco dressed in red-orange. Gaby Sanchez and Logan Morrison were in black jerseys while Emilio Bonifacio wore a black jacket over his black jersey.
"They think the uniforms represent Miami," said Sanchez, a Miami native. "It represents Miami. The whole event was Miami."
Omar Infante was in a red-orange top, sporting his new No. 12. Infante was No. 13 last year, but that number is going to new manager Ozzie Guillen.
John Buck also was in black.
"Surprisingly for me, the thing that I thought that I would not like the most about it is actually what I did like, the red-orange," Buck said. "It gives it a colorful flair."
Loria was looking for a unique, trendy look.
"We were looking for something new and forward looking, like our city," the owner said.