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The continuous-tone test asked whether 8 colors leave more than a tenth of the error of one color. A gray picture's tones lie along one line, where 8 colors come nearer to them, so some gray photos scored 0.078 to 0.093 and were traced as flat art, without the smoothing color photos get. Their noise then mixed neighboring tones (a 16 Colors trace could keep 10 or 12 colors) and stepped the edges. A picture with at least 95% of its opaque pixels within 8 levels across their channels now also counts as continuous tone when 8 colors leave more than 0.065 of the error of one color, unless 16 colors leave at most a fifth of the error of 8. These are VectorCraft's own values. The exception keeps gray flat art of up to 16 clean levels on its old route. Pictures with more than 5% of their opaque pixels outside that 8-level range are unchanged. Anti-aliased or noisy gray flat art can now take the smoothed route as well. Very noisy gray scans of flat art get fewer specks and staircase edges; some gray illustrations and sketches get more anchors and staircase edges at 16 Colors and High Fidelity Photo. Some 16 Colors and High Fidelity Photo palettes of gray photos grow toward the requested count, with more anchors and regions, and some 6 Colors traces get more staircase edges.