bright — A bright colour is strong and noticeable, and not dark.
cheerful — Someone who is cheerful is happy and shows this in their behaviour.
friendly — characteristic of or befitting a friend; showing friendship: a friendly greeting.
happy — delighted, pleased, or glad, as over a particular thing: to be happy to see a person.
hot — having or giving off heat; having a high temperature: a hot fire; hot coffee.
sympathetic — characterized by, proceeding from, exhibiting, or feeling sympathy; sympathizing; compassionate: a sympathetic listener.
warm — having or giving out a moderate degree of heat, as perceived by the senses: a warm bath.
appealing — Someone or something that is appealing is pleasing and attractive.
comfortable — If a piece of furniture or an item of clothing is comfortable, it makes you feel physically relaxed when you use it, for example because it is soft.
comforting — If you say that something is comforting, you mean it makes you feel less worried or unhappy.