I’m not sure I understand what the issue is to be honest. Are you trying to save your character as a PNG image? Have you tried pressing Export and were you able to see the file in a file explorer after saving? Were you able to open it, and was it different from what you’ve made in the editor?
If you hit “Reply” instead of “Quick Reply”, or use the “Go to editor” button here you should be taken to a more advanced text editing interface, where you can change the color of your posts.