Most of the suggestions I've read for this hack seem promising and quite helpful… Keep up the good work!
I don't think that shade of green you're using is good for the grass tiles… Perhaps you could modify it? ^_^;
I'd be able to help out with some sidetime scripting, but my plate's kinda full though[1][2][3][4]. Unless you're fine by yourself, that is. :]
This hack has a good amount of potential from how I see it, and is due for more peoples' contributions to be put in it. That's what I think, anyway. I wish you luck Pedro! ;D