I have the LMS Princess Royal locomotive in maroon downloaded, but I get the impression that there used to be a BR Green (and possibly black) version of it available too. Is it still available?
robin_hoods did release green and black reskins of the princess royal, but they still had their LMS lettering and such.
They were available on TPR last I checked.
On the "Broken" Page. Can't remember what Safari has but Fire Fox File > Save page as, will sort that mess out and save the page as a cdp which you can then install as normal. It's a browser issue. Happens with firefox on Windows as well.
You do have to be registered and signed in to be able to download anything.
However registration is free and so are the downloads
With fire fox once you have clicked on download you may get a page of gobbledegook this is a browser issue just right click in the page and then select save page as, you then get a save as page, click onto save and you will get the CDP downloading