Add 1 tsp. of liquid food coloring to 1 cup of water. Drizzle the colored water onto the soil surrounding the base of a plant. Wait 24 hours for the water to absorb. Apply another identical dose if the color change was not sufficient.
I love this idea of using large canvas type portraits in a collage format on a wall..and thats just like my desk the hubs is using in his office at work! Note for when we have a room for my own desk and office in our home one day!