Chris, I've posted the All-Dark ballast mod. I hope this is more what you look for. ;)

https://steamcommunity.com/sharedfiles/filedetails/?id=2177199477

I've checked, and you are right the the bullhead track with darker ballast, even high speed look great together.

I'll post an "All Dark" ballast mod for you. I have the original still on my disk.

My knowledge about ballast is about the Belgian State Railways. They covered sleepers into the track bed until after WWI. But at other railways it might have been different. Thanks for the correction.

Yes I have checked 1.02. It only works on standard track, the only place on my maps that use 'standard' track is in the stations where modded track still does not work. Therefore this mod is no longer any use to me.
PS: Major 19th century railways did use ballast, some covered the sleepers with the ballast others did not. Some railway economised and used cheaper alternatives like shingle (SE&CR).

AH! Sorry, but now I understand your remark, Sorry for being slow. You prefer the highspeed tracks also to have the darker ballast colour. Ok, I see... problem... choices... I've to think...

Chris, here is a picture of the different tracks from the two mods you mentioned. What is wrong with these tracks?

https://steamcommunity.com/sharedfiles/filedetails/?id=2177175078

Have you checked this latest version? 1.02.

I made some modifications to make it less intrusive, and only applying darker colour on the default track. No modifications are done on the high speed track ballast anymore.

Sorry the mod no longer woks with the bullhead track mod. The mods you made for high speed track renders this mod useless for me!
I can't see why high speed track cannot use this mod, the ballast used on HS1 is standard ballast that darkens with age.

Hello Chris, I had to make some adjustments for it to be compatible with Bullhead Railway Track mod, so I published version 1.02 with the corrections. It runs well together now,

I'll test with the mod you mentioned.

In the 19th century there was no "ballast". Sleepers were put into a sand bed, and only the rail was visible. The ballast bed has appeared at about 1920-ish. But that's details. We are using ballast beds in this game from 1850, and that is fine. ;)

I use the 'Bullhead rail on wooden sleepers', by killakanz and the 'old rusty track' mod. Please do not make alterations that make the mod stop working with these mods.
PS: Why is it called '20th century' as it also works for the 19th century? This is good!

Hello all, I've corrected the mod so that high speed tracks are not rendered with darker ballast anymore.

BUT! I've noticed that the base game is not prepared to deal with different track ballast colours very well. At points (switches), the blending is very bad, but I can't fix that. It's how ballast is rendered by the base game. So avoid the combination of high speed and normal speed track if possible, for the good looks.

Hello again Terabytes, I found your problem. You talk about the high speed track probably.

Well, indeed, not good. It changes also. I almost never play modern times, so I forgot. I will try and fix the problem. No panic. ;)

Hello Terabytes, what other tracks are affected by this recolouring? Maybe a different load order might solve your problem?

is there away to make this only affect standard tracks?