Hello,
Intf.TColors[i,j]:=Intf.TColors[i,j] or $FF000000;
With Linux/Debian 64bits FCP 3.2.2 Laz 3.2 and Gtk2, that line must be modified as
Intf.TColors[i,j]:=Intf.TColors[i,j] or integer($FF000000);
If not, you'll get a RangeCheckError...
(not tried the previous code, must be the same)
HTH,