Show the Tissue / Tissue Box

It is typically not easy for users find out the remaining amount of tissues. Therefore, if the user is aware of the amount of tissues in advance so as to refill, this can prevent the situation of no tissue from happening.
Green, yellow, and red colors are used to remind the user of the amount of tissues so as to avoid running into the predicament of no tissue. It indicates green when the amount of tissues is 100 % (full); yellow when the remaining is 50 %; red when the remaining is 25 %. When the user sees the red appears, who can refill the tissues immediately.