What i did / Steps to reproduce

1. Install Mekanism with Mekanism Additions
2. Place random color of plastic
3. Render

Expected result

View plastic of placed color

Actual result

Viewed green plastic

Context

BlueMap Version:
1.7.3-spigot-1.16.5

• The used os and platform: Linux, Bukkit + Forge (ArcLight) P.S With Forge Mod The problem not has gone
• The world was been generated by mods
• The Assets of mods are loaded by BlueMap

Screenshots

In web: https://i.imgur.com/nWTzO9q.png
In game: https://i.imgur.com/0M33Rlr.png

Those blocks are likely "tinted" in their special color.
You'll have to configure that tint so the color is correct, see: https://bluemap.bluecolored.de/wiki/customization/Mods.html#block-colors-config

If you need help with this, please visit our discord :)