Hi Guy,
Just following on from my earlier comment. I found this rather handy link (
http://bourbonr.com/blog/wp-content/uploads/2013/10/whisky-magazine-colour-bar.jpg) and worked up a couple of background colour combinations to show that the logo colour can change easily depending on the background colour.
So we can make it all one colour, two tone for light backgrounds, two tone for darker backgrounds - really isn't a problem :)
Here are those options; #144, #145, #146, #147, #148,
#149 and #150.
Cheers
Angus