i understand itsover9000's issues with paint.net and GIMP, as we are friends in real life as well, niether of us have administrative priveleges on our computers and we also have internet filters, so it is a bit hard to download and use either of those. since paint is already programmed, it seemed easier to use that instead of hacking into your own computer and giving yourself administrative rights. so, "default colors go!" , but even so, i agree with 5qwerty, using default colors is not a good idea, especially when hacking pokemon emerald, because you can't add new palletes into emerald.
(EDIT #2): BTW, his sprites have 10 colors.
(EDIT): also, i agree with ScizorZ, you do keep it simple and stylish and don't jump into things that would be too hard for your current skill level.
so, for everyone else, if you had a problem with him using paint, now at least you understand his sorrows.
MANYO, GO!