Smoke only comes out as black

I have seen tutorials that show how to make the smoke coloured by the heat value, but I don’t want this because my smoke is in fact not smoke, but is pollen dust so has heat value of zero.

So is there a way to colour smoke without using heat value?

Thanks.


and

I already have those settings! :frowning:
But thanks anyway.

I have noticed that on some renders, anything falling within the Smoke Domain is appearing darkened…not black, but darkened (see below):

http://symbiob.com/blackSmoke.jpg

Oops accidentally sent a second post of the above… this is an edit of it - how do I delete it please?

Material of the terrain :

I finally figured out what the problem is - it is the smoke Volume Material’s Resolution setting! I ramped it up to 500 now I see shading and colour!! Must be to do with unusual scale I am working at.