They were all wooden with three windows on a side and peaked roofs. Later modified to the two window sides and round roofs. With the exception of the 346 and her all steel cab, all of the engines had wooden cabs until the end of their Colorado service. The steel sides under the windows was merely sheathing, covering over the wood sides for better painting and to replace rotted side boards. The two engines at Knott's Berry Farm have all steel cabs but they were installed by the Farm.
As to tenders they were interchangeable and if you are modeling go with photos. No standards but whatever was available. If an engine went into the shop or it's tender was wrecked it might swap out with another.
An interesting bit of tender swapping is centered around 318 and 340 and ultimately the 346. Sometime in the 40's the cow creek tank on the Ouray branch burned and wasn't replaced. In order for a C class engine to get to water at Ridgway it had to have a larger tender than normal. The tender in question is the one currently behind the 318 at the CRRM. 318 was assigned to the branch with 340 as back up but 318's tender was one of the small F&CC versions. Whichever engine was working the branch hauled the big tender. When the D&RGW sold the 340 to Knott's Berry Farm it took 318's little tender with it and the 318 kept the 340's large tender. Up until the repaints in the early 1990s you could make out the "318" under the gaudy paint. When 318 and 346 went to the CRRM from Alamosa and the volunteers put 346 back in steam it was found that the 346's tender was a sieve! So they swapped the 318's tender, 340's old tender, to the 346 where it served that engine for many years until the recent rebuild of 346 and her tender.
So they swapped around a lot.