Dyeing of blocks

It would be great if we could have more color options. For example by combining 2 colors of dye with each other to mix them or just adding white or black to change the shade of the color. This would help with building some things and not being so limited. Concrete powder has the problem of dropping and needs to be put on something, but if you make them wet, the color gets different and you don't get to use the shade of the powder. That's not a bad thing, but the colors don't always fit, because of that. Maybe it could be also helped by being also to paint wood, which could give a nice new color shade.