Quick question

Spear tips can be silver, and basically any metal parts can be if you don't choose gold or stone for LM.

You might find some use for the yellow, it is good as an upper highlight for anything brown or to lighten any brown colours.

Teeth and bones as well because they also should be more detailed. Actually it works for any area, but of course putting wash on the black shield isn't going to show up at all because its already black. For that you would give it some small highlights of grey. Teeth and bone usually can be started scorched brown, mostly brushed bleached bone, washed, then lightly drybrushed bleached bone.

 

Mk.