I have tried in the past to mix enamels, same brand different colours...............
glass pipette and measure the amounts and put into a new clean enamel bottle............
But haven't bothered with it much since using Creative Enamels, all the colours you could want are there.............
And why make more work, when I don't need to !!!!
But if mixing is your thing then there is nothing wrong with that, have fun!!!!!!
But like Geeg, I layer colours.......Lulu collection is my Favorite for layering different colours and you can create 1000's of different looks with these.............
Even Voddo the black is used as a base to deepen the reds and the browns and the purples...........
JMHO