Hi
Ad same problem with one of those US shoulder harness for Colt 1911. I also used Linseed Oil and it worked great. Dont have photos to show but i can get some if you like 
Best regards
"Sweat saves blood, blood saves lives, and brains saves both" - FM Erwin Rommel
Ok i'll do that.
Just read your post again and regard something that you wrote that one sanded the leather and then soaked it. I didnt sand mine only applied the unboiled linseed oil with a paintbrush and it worked fine! Not to bright and not to dark.
Best regards
"Sweat saves blood, blood saves lives, and brains saves both" - FM Erwin Rommel
or do what i did and use brown shoe polish of a darker shade ,worked beautifully on my orange tan mauser holster ,now looks a nice antique brown.
armoury
m1a1 Thompson,sten mk2,mp40,stg44,sterling,mk2 bren gun,lee Enfield no4 mk1,Mauser Kar98, Walther ppk,smith and Weston m10 and Mauser m712
Give me a big enough hammer and a place to stand and I could fix the world.
i'll kill a man in a fair fight or if i think he's going to start a fair fight or over a woman or.......
a problem shared is a problem halved ,but an advantage shared is no advantage at all
if a job's not worth doing then its certainly not worth doing well
Leather dye... Apply it after the holster has been rubbed down...
You can get it at a GOOD cobbler. Or try ebay.
seriously boot polish,the strap across it is the same colour before polishing.
and that was only a light cote
armoury
m1a1 Thompson,sten mk2,mp40,stg44,sterling,mk2 bren gun,lee Enfield no4 mk1,Mauser Kar98, Walther ppk,smith and Weston m10 and Mauser m712
Give me a big enough hammer and a place to stand and I could fix the world.
i'll kill a man in a fair fight or if i think he's going to start a fair fight or over a woman or.......
a problem shared is a problem halved ,but an advantage shared is no advantage at all
if a job's not worth doing then its certainly not worth doing well
I did mine with just boot polish (various - black & brown - don't forget the edges) and good use over a few years. I sold it just recently to a dealer at a military fair who thought it was an original and I could see the look in his eyes as thought he had found a bargain. Well, it was a good price for sure and I did put him right on the provenance. I bet he sold it for five times the price as an original. 
I used nail polish remover to get rid of the rubbish orange colour, let it dry and then used brown leather dye from Timpsons followed by a good covering of brown boot polish. It looks awesome.
Following that, does anyone know how to tie up the leg strap? I know I've seen it somewhere before but can't find it now.
