I have thousands of GeoTIFF source files that cover whole country in 6 different layers. I have created VRT file for each layer. I loaded everything in QGIS, assigning correct colors to bands in each VRT. I exported from QGIS a VRT of it all. When running the combined VRT through gdal2tiles, the resulting tiles are all either completely blue, or part lightblue. I suspect this corresponds to two different original sources of layers.
Is there a way to preserve the color palettes as defined in QGIS? The challenge is, that each layer is composed of hundreds of monochrome files, and it seems the color assignment wasn't saved?