The 250ml beverage boxes feature cartoon illustrations in luminous colours of the two fruits to ensure greater visibility on Hong Kong's crowded store shelves.
The two flavours are being distributed in supermarkets and convenience stores, retailing at between HK$3 and $4 (40 to 50 US cents).
"The branding and communication of the Yueng Gwong brand really aims to connect with teens," said Elsie Tsui, division public affairs and communications manager for Coca-Cola, "and the white grape flavour is the first white grape tea flavour".
A television-led campaign by Ogilvy & Mather features Hong Kong boy band Boyz and pushes a 'Wow, mix!' tagline to highlight the product's tea and fruit combination. Outdoor advertising includes 3D bus shelter displays in key shopping districts that will run until the end of this month.
Coke cited a consumer survey conducted by its research team which found that more than 70 per cent of respondents expressed intent to buy the new products after the success of the original mango and kiwi flavour launch.
The company has also launched a Fanta Lactic product in Hong Kong, with a tongue-in-cheek campaign including a TVC featuring a rocket cow and buses exteriors and interiors painted to look like cow hide. The new Fanta Lactic comes in plain or white grape flavours.