mixing powders can sometimes bring out a decent effect..sometimes not.
translucents over a darker base will usually change the color of the translucent. silvervein is as dark as i like to go with. using the trans red over black with chrome mixed in sounds ok i guess, but i dont know how the 3 different powders (chemistry wise) will react.
try out a few small test tubes and play with the mixture and settle on something you like
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