osjc's contrast review:
well you can colour me... unimpressed.
pure gimmic...
you could probably make your own by mixing shade and colour together to be honest! lOL
essentially, they're just fancy named glazes that dry flat. using the official contrast undercoat bases, is not vital imho and to be honest yields better results on things like Caucasian skin. e.g.
a base of 50/50 wraithbone and cadian fleshtone, roughly highligted/layered up with more wraithbone as a successive admix,
then the guilliman flesh is much more preferable to guilliman flesh straight over wriathbone. (that is unless you want the flesh to look anemic! if you're umming and ahhing due to cost,
save your money. instead invest in more time to perfect your current skill level. seriously, I'm cross at how gw has sold this as talent in a bottle, (not that I thought it would be as much, too much of an old soak to fall for media hype these days) but I feel sorry for the kids who will feel like they're doing something wrong when it dont work that way...
dont get me wrong, they'll have their uses:
alternative/more gentle shades for skin.
nice blending on capes/tabbards,
metal undercoat and contrast glaze for glowy power weapons/alternative enameled/anodized armour effect.
easy yellow for another example but, shit, we've all been using the white undercoat, successive shade/glaze method for yellow since before the old king died anyway, not to mention that inks and washes/shade have been allowing us to do the other stuff too so I dont really see the big deal here.
perhaps its just me. I dunno. put it this way, I can see me using the flesh and yellow one and thats it... but then Ive been at it for a while and have learnt other ways of doing stuff that yield just as good(if not better) results but may take longer. big deal... why is the world so impatient these days...
oh, don't even get me started on the apothacary "white" one

that i thought to be an answer to my
not painting white good issue. you can forget that!