Sixteen colours is not a design, it is a bill
Every colour in a screen-printed job is a screen: another burn, another setup, another registration, another wash. So the number that decides whether a job is profitable is not resolution, it is how many distinct colours came out of the trace.
This is where automatic conversion quietly ruins files. A logo a human would separate into four spot colours often comes back from a tracer with twelve to twenty, because anti-aliased edges and JPEG artefacts create dozens of near-identical shades that look like one colour on screen. We measured our own output on a sample of production files and a quarter of them exceeded sixteen colours before we tightened the merge.
Check it before you quote: open the file and look at the swatch list. If a single logo colour is spread across eight nearly identical entries, the file needs merging, not printing.


