Thank you for the kind words, Brian. :-D
The torpedo tube air tanks are soft metal ones from Juneco. Detail Associates also makes a similar part in plastic which is better detailed.
All of the lettering is painted on - these were the first two that I did, and they were painted with PollyS military colours using a brush. All of the areas where the lettering was to be maroon were painted that colour, and all of the areas that were to be lettered in cream were painted cream. I then used C-D-S dry transfer alphabet sets to letter the appropriate areas - the colour of the dry transfers in not important, as they're used only as a "mask" (the letters are applied as usual, but the final step of burnishing them in place is not done). I also used dry transfer stripes as masks for the striping on the hoods and cab. The locos were then painted the appropriate colours, again, using a brush, and as soon as the paint was dry to the touch, I used a piece of masking tape to dab at the dry transfers, lifting them off and revealing the colour underneath. Most of this came off quite cleanly, but there were some areas that required touch-up with a fine brush - some areas around the lettering and some of the lettering itself. The cab heralds were brush-painted freehand, as no suitable dry transfers were available at the time. C-D-S later released a lettering set for TH&B diesels, in very appropriate colours, but it may be no longer available, as C-D-S has ceased operations. You may be able to find them in a hobbyshop somewhere, or you could contact C-D-S directly - they're not making any more lettering, but they are continuing to sell their stock on hand. The set is #413 and it will do either a geep or a switcher.
Wayne