Drew one of my first prompt pictures from my book. A wizard staff~ not bad, not bad at all i think it came out well. Should i color it? Or keep it black and white?

Published March 4, 2015 at 150 × 150 in Drew one of my first prompt pictures from my book. A wizard staff~ not bad, not bad at all i think it came out well. Should i color it? Or keep it black and white?