I am not aware of any other 'Larger' edging product produced by EMSCO.
I use a lightweight rechargeable weed eater and there was no problem going around this edging.
I don't know because I didn't try. They're hard plastic and look like they'd take paint well, but again, I haven't tried.
It could if it's not too much mud. It's not that high when you place it into ground and overtime some pieces might get disconnected. But I am very happy to have it along my flower beds with mulch.
They should stay in place because they are installed by hammering them in the ground with a mallet. Unless you have an erosion problem, they should be ok. I hope they work.
Individual pieces are ridged but when you snap multiple pieces together it will form a circle
It would be difficult to mow along the line. I would recommend the use of a lawn trimmer to get an acceptable appearance.
I would think that if you purchased brown from them before, you could get more. If they don't have it in the store, order it.
It may, however keep in mind these are only ~6 inches tall and if driven 1/2 down leaves at best ~3 inches to close a gap. Getting them close against an opening might be tough unless you use a pc of wood or such as a intermediate to drive the edging close against the shed. You may be better off considering other drive in fencing such as Emsco Dackers or Colonial Garden fence ... or other brand similar. Neighbor cat may be useful too .... ; )
The ones I bought were about 6.5 inches long including the slide together "tongue and grove attachment".