Many of the works of talented Japanese graphic designer Ippei Tsujio (@keltoto) focus on creative logos and signage, and he's used his expertise in that field to design a clever set of drinkware. Tsujio recently shared his idea in a set of photos to Twitter: drinking glasses that reveal the contents in response to color via a logo on the front.

Coffee

Milk

Milk and Coffee

Tsujio's design for a set of coffee drinking glasses reveal whether you're drinking coffee, milk, or a mix of both by filling out the cute logos he's designed on the front (or kanji on the Japanese glasses). The designer says that he intends to make the clever drinking glasses available for retail, but has not yet done so, so be sure to follow Tsujio on Twitter, Instagram, and his official website for updates.

This is also just one of many awesome designs Tsujio has created. Here are a few more of the designer's great work.

Wearable train tickets

Calendar that helps you focus on just today

Greenhouse aquarium

Mathematical chocolate

Stuffed animal scented candals