I noticed a lot of isometric views of grass tiles, but this is going to be for overhead/ three quarters type view. Just one thing to say about grass tiles, it is a good idea NOT to try to smudge or blur your tile once you complete it on order to blend it. The only thing that tends to accomplish is to make your tile look less detailed than it did in the first place Of course this is assuming that you want to make SD3 type grass tiles. OK so lets start with our tile...we are going to reduce the color depth to 4bit color depth (16 colors) and choose three shades of greens. The first one should be rather dark, with a low intensity (mixing a little "grey" to the color). Also, we are going to make our green a little on the yellowish side, so that it looks more like an olive color than anything else. This will help give you the natural looking green that suits grass tiles well in my opinion. Also , when you choose your lighter shades of green, I tend to continually add a little more yellow in each time, so that the highlights of your grassblades are not neon or flourescent yellow...heh. Alright, here is a little preview of what my 'palette' looks like thus far.