UPDATE:!!!!!!!!!!!!!!!!!!!
i just made a catastrophic discovery when trying to find some way of turning the keyboard light off / on.

instead of installing this mod, you can apparently just edit mce.ini and change 'filter-brightness-als' to filter-brightness-simple' under modules=
this enables a simple brightness system, where the light sensor is not in effect and the 5 steps (SYSTEM steps) are spaced good between each other, the values are 51, 102, 153, 204, 255.
So if you really want to get rid of light sensor & get nice colors with the 153 & 204 (step 3 & 4) this is the easiest way to go.


Install steps (will also be added to post #2)
Remember to uninstall custom brightness mod!!!
Terminal:
root or gainroot
sed -ie 's/brightness-als/brightness-simple/' /etc/mce/mce.ini
or you can just edit mce.ini, the sed command just changes this as you would manually by editing the mce.ini

after this restart your N900

This has been one of those massive FACE PALM moments or in other words D'oh!