引用自 TaradinoC：

引用自 asterisk11231：

I'm not really sure why I'd use RandomHue...

The name is a bit misleading, I think. (It must have seemed like a good idea at the time...)

For RandomHue, buses are always blue, metros are always green, trains are always orange, but there's a list of possible colors for each (blues.txt, etc.) and it'll pick one randomly from that list.

引用自 asterisk11231：

2) "random category color" - maybe it's already doing it and I didn't see enough lines to get it working but when I tried category color it just seemed to be the defaults. It probably should say in parenthesis or "no change - vanilla behavior"

For "CategorisedColor", what's supposed to happen is that buses are always picked from a list of pale colors, metros from a list of bright colors, and everything else from a list of dark colors. And instead of picking randomly, it basically cycles through the list.

What's it doing for you instead? The same color for all lines?

I think RandomHue is "Random Category Color" but the differentiation between color in Categorized color isn't large enough. I was having way too many issues with lines in IPT2 after the new harmony updates and I don't have my workaround for Toggleable whiteness affect on Tour Bus lines. I thought it was almost the same color so maybe I just never added enough lines to see a difference.

If a line has only two stations, add "Shuttle" to the end of the name.
If it passes through stations without stopping there, append "Express" to the end of the name

If you're looking for color theme ideas, try Color Brewer [colorbrewer2.org]

I think I got a good idea, How about a NYC Style for Subways & Metros! I think it might be a good idea honestly.
Like the entire alphabet.

And the numbers. And special overrides like S....

might be far-fetched, but extending this to highways (ex: I-90, SH-34, etc.) would be a nice to have and would make highways in maps more realistically named