hello, my train changes color once empty it turns grey, is that normal? if so, can you make sure that trains with the same cargo to be transported always keep their same color even empty, because I don't see the usefulness of the mod if these just so that the trains are of a certain color when they are full, when I look at the trains in station but which are empty they are grey and I find it not very pretty, I wanted to use the mod to automatically put the color corresponding to the cargo of the train, so much as I put the colors myself what is too bad for what the mod can do

There's an option in the settings that controls this behavior. Under the Mod settings | Map tab, there is an checkbox Unpaint empty trains. It should only revert the trains to a gray color if this is checked. If your setting is unchecked, but it is still unpainting the trains, then that is a bug, and I would like to know.

Cheers.

I didn't see that there was an option, and I just unchecked the box and my trains keep the color.

I come back to you, to share with you some of the concerns I have.

first of all I have one locomotive on both which is the same colour as the cargo, but not on all my trains there are some where the colour of these goods is placed on all locomotives

secondly, the colour is not transferred to certain stations, yet the train at goods the colour of its cargo

If you examine the color of the train station by selecting the station and then the color icon, and the note the RGB values, do they change when the train leaves the station (you have to close and reopen the station screen to see the changes, IIRC).

Stations don't accept the color of the trains; it blends its current color with that of the train. If you have red circuits and green circuits being delivered on two different trains, the station will not change between red and green; it will become more of yellowish color. The more green trains over red trains the closer toward green it will shift.

Finally, check the FAQ link above.