1.12.2 JustEnoughIDs modded biomes color renderdata doesn't work

[samasiassa]

Issue Description: It seems dynmap doesn't recognize JEID format modded biomes colormaps from custom renderdata at all. Works fine without JEID tho

• Dynmap Version: v3.7-beta-6 for Forge v1.12.2
• Steps to Replicate:

1. Install JustEnoughIDs and some custom biome mod (i use BiomesOPlenty for 1.12.2 forge);
2. If use BiomesOPlenty to replicate, then add BiomesOPlenty-texture.txt to dynmap renderdata folder containing this:

modname:biomesoplenty

var:biome_ids/Tundra=90

biome:id=biome_ids/Tundra,grassColorMult=1AA8A4E,foliageColorMult=1B5A353

3. You will see on integrated dynmap there's no custom colors from renderdata, just default plain green instead of red tundra

[x] I have looked at all other issues and this is not a duplicate
[x] I have been able to replicate this