ive bought this up before and i saw a note in the changelog in 2.1.8 stating optifine colormap compatibility but it doesnt appear to be what i thought it was.
im running 1.10.2.

essentially theres no way to apply grid format colourmaps from optifine/mcpatcher to the grass/extra leaves i cant seem to get it to stop using minecrafts vanilla colour map.

for example:

the grass is using a grid colormap but the short grass is the wrong colour

and same with the leaves

im using the grid format as it allows me to colour every biome independantly as vanilla minecrafts format is awful.

simply for reference, heres my grass.png in grid format (each number beside a biome represents a pixel coordinate on the x axis, i use it to easily differentiate and colour each collumn) :

and heres minecrafts default:

note that the short grass completely ignores the swamp biome colours and just defaults to the dark dead green colour.

i was also asked to give a rundown of how to enable grid format:

in ~/mcpatcher/

create a new file named 'color.properties'

on a new line, add 'palette.format=grid' and save

create a folder named 'colormap'

then inside that create another folder named 'blocks'

final path should be ~/mcpatcher/colormap/blocks/

add these two images to that folder:

http://i.imgur.com/vj7huwi.png (name it 'grass.png')

http://i.imgur.com/jsv2NHj.png (name it 'foliage.png')

create two new properties files -

one named foliage.properties and the other grass.properites

paste these inside them:

foliage.properties http://pastebin.com/pMpwvKRY

grass.properties http://pastebin.com/ENgwPcRe

and youre done, load up minecraft.

a brief explaination of how grid works:

in the png, each pixel along the x axis refers to a single biome and is in order of the biome ids, i put the ids in the png for reference but you can also get them here http://minecraft.gamepedia.com/Biome/ID

the y axis of the png refers to the block height, but it is flipped so y256 in the png = y0 ingame (no idea why)

this should replicate my resource packs biome settings, check biomes like mesa, swampland and hell.

i hope this helps.

This has been fixed in 2.1.10