I hate to do a topic like this

[Shadowth117]

I'm going to agree with this, however I think 8 colors is a limitation we don't need.

But see that's the point. Its a lot easier edit and resize a sprite with few colors and fix it up later then to resize and edit a detailed sprite because of all the different colors you'd have to deal with. There's nothing wrong with using a lot of colors, but since you're likely going to have to change the sprites later its better to keep it simple for your sake and add in details later that fit the style.