Sometime in the next two years, if Hearst Corp.'s plans work out, a handful of Seattle Post-Intelligencer readers will begin getting their morning news not from the paper on the front stoop or by dropping change in a corner newsbox — or even on their laptop — but from a new electronic newspaper that's displayed on a screen as light and flexible as paper. The screen will be about the size of a small tabloid newspaper, and it will be in color.