Color changing sprayer container

A sprayer comprising:

• a sprayer container adapted to be filled with a fluid, the sprayer container having at least a portion thereof including thermochromic color-changing properties, the sprayer container including an interior surface and an exterior surface;
• and
• a spraying gun connected to the sprayer container, the spraying gun includes a trigger for selectively spraying pressurized fluid in the sprayer container onto a predetermined object;
• wherein the sprayer container indicates the amount of fluid in the sprayer container by a color change line at the at least a portion of the sprayer container including thermochromic color-changing properties located at a transition line between the fluid and gas within the sprayer container when fluid is located within the sprayer container, thereby causing a top area of the sprayer container having the interior surface adjacent the gas to be a first color and a bottom area of the sprayer container having the interior surface adjacent the fluid to be a second color.