When changing the Colourmap and block textures for bedrock edition for a custom resource pack, sections of the world apply a green tint (Usually the dark oak forest) to the outcome.
To Reproduce:
Create a resource pack and turn all the different colourmap's white
change the block textures for grass (specifically any relating to "top") to pure white
Load into the world and find "roofed forest"
locate area which is displaying a green tint on the white
validate the green tint on top of the block remains regardless of changes to resource in that specific biome
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Please attach a resource pack that can be used to reproduce the issue.
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Actually, an intentional workaround has been added for this issue, so this "bug" should be considered "Works As Intended".
The new "grass_appearance" field in client_biome files is not affected by this darkening. This way, you can set the exact color of roofed forest grass with a resource pack.
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Here it is with #FFFFFF (white):
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