@olsen
thank you, this did the trick with workbench.library 45.127
but i have BB4 and workbench.library 45.137 (i kept 45.127 in safe place, in case of... and i was right), and it don't work with this version.
in this one, the chain is
7E03 0C40 7A01
so, i tried replace by
7A01 0C40 7A01
and
7E01 0C40 7E01
but this don't work. color stay the same.
i'm not good at coding, so i don't really understand what i'm doing :lol: