white or silver metallic.
a vacuum insulated thermos mug will do even better, the the outside color doesn't matter.
the answer is it gets it colder
A Flask
Igloo-type cooler.
In general, foam is a better insulator than metal, and so foam would be expected to keep water hotter longer under most normal circumstances.
It depends on the mug. If you use a heat retentive coffee mug, it will keep your coffee hot to the last sip (25 to 30 minutes); It requires one minute preheating in a microwave oven.
Yes, both a thermos and a glass cup can help keep liquids hotter for longer periods of time compared to a regular open container. This is because they have better insulation properties, reducing heat transfer between the liquid and the surrounding environment.
In coffee, add milk or creamer. If you mean paint, just keep adding white to brown until it's the color you want.
Dark roast coffee typically contains more caffeine than light roast coffee, which can help keep you awake longer.
When choosing an opaque coffee container, look for one made of a material that blocks out light to prevent coffee beans from becoming stale. Additionally, choose a container with a tight seal to keep air out and maintain freshness.
Plastic generally does not keep liquid hotter than a foam container or glass container. Foam containers have better insulating properties, making them more effective at retaining heat. Glass containers also have higher thermal conductivity, which can help keep liquids hotter for longer periods compared to plastic.
smeagol
Because you keep getting more desperate and desperate.