Whew, quite a few comments here, thanks guys!

At the moment, the catentary props are implemented as overhanging props, like the ones that frogface created a while ago. But they will have transparent base textures, so they can be used with any terrain mod. As you can see on some of the screenshots, PEG's Alternate Rail Set Mod looks best with them, esp. when you place those that span more than two tiles. They will be placed in the power menu, which makes sense, and which isn't too overcroweded yet.

I'm also pondering about making a mod that changes the type 21 exemplar files, so the props will show up automatically when you drag rails, so you don't need lots at all, but the main problem is that they will show up
everywhere. It looks esp. odd if you place parallel tracks on two or more tiles (i. e. in the area in front of a large terminal station), and usually, only main lines have catenaries, while they are rarely found in industrial areas, for instance.
Considering this (and the fact that making such a mod is some tedious work

), I'm not sure if I'll proceed, but I'll definitely look into it again. Once this set is finished, Kenworth wanted to create some concrete poles, which might also look good on GLR tracks (that's what crossed our minds immediately after the first experiments

). Some of the catenaries for the first set are still under construction, but I think they will be available very soon.
About the texture on the filler lots: That's the light green grass is used on the Maxis pastures and orchards (0x25D60000, if I'm not mistaken). It should be close to the other field textures in LE. BTW, the Cycledogg trees that are used on the diagonal filler lots use the prop family ID of my Street Tree Mod. So if you place them next to a diagonal street or road, they will show the same trees, creating a uniform look. But if you want, you can also use them without the actual mod; you only need the tree prop files that are supplied with the mod (I might include them in this set, too).