they're clamped to color 15 it seems.
not a big deal, but maybe it's an easy fix?

Thanks -- will fix this for the next update (after 0.2.0f)

This is currently a limitation of the .p8 format -- it's still possible to save a .p8.png and post it on the BBS (or do it via SAVE @CLIP) with non-standard colours preserved.

Fixed in 0.2.0g