I was just trying to have some fun so I went ahead and made this tutorial on "how to draw dark Sonic". There is no rhyme or reason why I made this concept, I think I just wanted to see what Sonic would look like if he was dark. Overall he came out pretty cool. You don't have to color him in using dark gray shades. You can choose to use his blue hues if you like. Sonic is only dark if you color him that way. Drawing sonic characters is always fun, so if you wanted to see this game character in this drawing style, here he is. Have fun and good luck with your drawing endeavors.