QGIS 3.8, Win. 10. In addition to a question asked earlier, I want to set the color of text-buffers to adapt to the color from another layer in the background. I have a shapeburst-style background (blue) and on top of it the label with buffer. I would like to keep the buffer, but change the color (override) to exactly the same color as the background (which is on another layer): is that possible? Can I create an expression that takes the color dynamically form another layer?
In the screenshot, the label-buffer for name 3a should have a darker blue value on the left and a brighter one on the right.
I need the buffer to to mask the leader lines that continue below the label. So the buffer does not make sense as it has exactly the same color as the background, but it makes senst to cover the lines.