Tartle Wiz?! Hold on a second. That is me! I have never used JPixel but it looks really good. For the Tartle RPG Tool I did the art using an app on android called IsoPix. For the character generator, I then added some variation to the pixel colors for the character's hair using the burn tool in Gimp. I used an all grey pallet so that I could apply color shading using a script in Unit3d.The hair, eyes, silhouette, beards, and hats are separate sprites.