Hey I am making a goldrush tileset, it's these gold mines, the vines are these yellow ropes and the groud is brown. There is going to be pieces of gold and ores in the mine but with their colour it will look as if the ropes (vines,hooks) are made of gold too. If I make the ropes using whites they look metalic, if I use yellow it looks like the gold and if I use brown then they are the colour of the ground... what should I do?