I used to do no end of these studies when I was in college and I still like to go back to doing them at times; they're good for focus and concentration. As well as having its own colour, an object always reflects the colour of the thing next to it. Lemons are especially receptive and take on any number of colours while still remaining basically yellow (does that make sense?).
I've continued the black around the borders so in theory the painting can be popped over a nail as it is, or it can be framed, it's a personal choice.
acrylic on canvas