Choose your desired base spread (cream cheese, yogurt, fluff, icing, or whipped cream), or multiples. Note: each will have a slightly different texture and consistency. Divide the spread(s) into separate bowls (one for each color/combination you will be using). Add desired amount of food coloring to each bowl, starting with a few drops at a time until you achieve the desired tint.
Toast the bread slices to desired level.
Begin spreading cream cheese (or other base spread) onto toast. Tip: it may help to start with a base layer of plain white cream cheese (or other spread) to help the colors blend together nicely. Adding one colored spread at a time, using a knife or chopstick, “paint” the toast in your desired colors and patterns, blending the colors together as necessary.
Once you have finished “painting” your toast, decorate with any desired sprinkles, candies, or other edible decorations.
Give your creation a name, photograph, then enjoy!