I was asked to make some long earrings with bronze and gold type colours on a background of glass 'the colour of Marmite' that doesn't look buttery when the light shines through.
Seemed easy enough, I ordered some Deep Rose Brown glass and some streaky brown and started to play. I quickly realised that the undesirable 'buttery' effect was not due to the backing glass but in fact as a result of putting clear gold dichroic glass on top that diluted the dark glass.
Once I realised that, I knew there was no way to include gold tints on a clear glass so I cheated (err a work around) and used black backed gold glass interspersed with darker clear glasses to get the hues right.
Here are 3 pairs that I put forward to choose from. My lovely customer has ordered 2 of the 3 (originally she only wanted one pair)