This small cobalt blue bottle had tricky highlights and shadows, as there was no true white or black present. Colored pencil, 5 1/2" x 8". I was glad for the instant color variations and saturation I could achieve with colored pencil (though moving so quickly I broke my purple lead, and didn't want to take the time to sharpen it). The same bottle in watercolor might be interesting to compare for speed and saturation, but should I repeat myself? Each time I wonder that, I think about Monet painting haystacks, and the Rouen cathedral facade... over and over again... changing the lighting is all it takes to make a subject new.