Extract the folder of your choice in <Your documents>/Bioware/Dragon Age/packages/core/override

LNL_tints is the main version
LNL_tints_uniform is the version where all tiers look the same
LNL_tints_originals contains a version of the tint made by Bioware with my own naming convention (more practical to find what you're looking for).
So if for example, you like the mod overall but don't like what I did to gray iron, you can replace the corresponding file with the one from this folder.