Repainted - weathered C&D (Trash) cars - Part 2

Some progress on my C&D cars....
After priming them (I didn't bother to strip them), I left 3 in the primer grey, and 2 in rattle-can sky blue. One sky blue car will become GBRX 934873, an ex-GN  woodchip hopper. Goal is to also model the tarps.

It's coming along... slowly!


The other cars currently look like this:

I will letter them for my private leasing company.

So, why have these been taking so long?  I really don't know, but I've been on a weathering tear lately.
Here's some examples (cars are from both Intermountain and Atlas Trainman):

For comparison, here's a new box from Intermountain.