As you can see, the screw doubles as an adjustment point, which you may have to adjust to get a good green level.

Cut through the glue and slide the polarizer left or right until the projector's color looks good. This can be a bit tedious because you need to reinstall the mainboard to test it between each adjustment.

Once you get it adjusted how you want, you're done! Just reassemble the projector and you're good to go.