If the containers are the same apart from the colour, no. But if the red container is more insulated than the blue one, yes If the blue is more insulated than the red, no.
Igloo-type cooler.
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.
the answer is it gets it colder
A Flask
To keep a blue spruce small in size, you can prune it regularly, limit its water and fertilizer intake, and plant it in a container to restrict its growth.
No, at a certain temperature the water evaporates and turns into gas.
styrofoam, but warning fammable and unsafe for the environment!
In general, foam is a better insulator than metal, and so foam would be expected to keep water hotter longer under most normal circumstances.
thermos cup
Keep them in the refrigerator but not in water, just in a sealed container.
forever. given its in a sealed container
A paper cup typically does not keep water hotter than a plastic cup. Paper is a poor insulator compared to plastic, so heat is more likely to escape from a paper cup, leading to faster cooling of the water inside.