Paint compositions with color change characteristics

A method comprising:

• stirring a fluid comprising a coloring agent, a binder, and microcapsules to distribute the binder, the coloring agent, and the microcapsules in the fluid, wherein the fluid maintains the coloring agent in a first protonation state, wherein the microcapsules contain a chemical compound, and wherein rupture of at least a portion of the microcapsules is configured to release the chemical compound and expose the coloring agent to the chemical compound to change the coloring agent from the first protonation state to a second protonation state;
• and
• applying the fluid to a surface to form a painted surface, wherein the painted surface has a first color characteristic based on the first protonation state of the coloring agent before rupture of at least the portion of the microcapsules, and wherein the painted surface has a second color characteristic based on the second protonation state in response to rupture of at least the portion of the microcapsules.

A method of changing a first color characteristic of paint applied to a surface, the paint including a binder, a coloring agent in the binder, and microcapsules in the binder, the method comprising:

• rupturing at least a portion of the microcapsules in the paint, wherein rupturing at least the portion of the microcapsules exposes the coloring agent to a chemical in the microcapsules to change the coloring agent from a first protonation state with the first color characteristic to a second protonation state with a second color characteristic, the second color characteristic visually distinct from the first color characteristic.