// ReactionRecorder - business logic for recording paint reactions

    public class ReactionRecorder

    {

        const int COLOR_TOLERANCE = 3;

        const int DEFAULT_SWATCH_HEIGHT = 24; // including top and bottom borders

        const int DEFAULT_RED_BAR_SPACING = 32;

        const int DEFAULT_GREEN_BAR_SPACING = 42;

        const int DEFAULT_BLUE_BAR_SPACING = 52;

        const int DEFAULT_SWATCH_TEST_WIDTH = 26; // width to test on ends of swatch (10% on either end)