I am puzzled by your requirement to see no "faded colours" . If you mean that you do not want any anti aliasing then make the circle as a path tool and stroke it with the pencil tool (icon at bottom of paths panel). It will have a very harsh pixelated edge though - w...
Now, when you make a new map or edit an existing one, you can choose this tileset configuration to be applied to it. There is a lot of software that you can use to make your own sprites. You can start with plain old paint or Gimp or you can get yourself software that is specifica...
I am puzzled by your requirement to see no "faded colours" . If you mean that you do not want any anti aliasing then make the circle as a path tool and stroke it with the pencil tool (icon at bottom of paths panel). It will have a very harsh pixelated...