Version 0.3 is out! See here for details and source code
UPDATE 2014-11-22:
Version 0.2 is out! It includes a few minor updates and is now available on Bananas.
Here's the source: (note the makefile doesn't fully work yet so you have to make and compile separately)
Original Post wrote:I just found out how easy it is to make new company colours via NewGRF. I wonder why nobody has done it before (apart from Pikka and his purple/mauve to black GRFs)
This is a prototype of the NewCC set, which replaces or improves almost all company colours. The intention is to make them into colours that are more likely to be used by both modern and old liveries However, for now it is first company colour only because making a full set of 256 2CC recolour sprites is a bit of work. Note that this means it will only work on vehicles that don't have the 2CC bit set in the misc flags; 2CC vehicles will be displayed with the old company colours. This does, however, give a good way of comparing them (note: use the AL1 and AL6 in UKRS1; they are almost the same but one is 1CC and one is 2CC)
I am releasing this test version to see what people think about the new colours. I will eventually get the 2CC version finished, because I have something planned for it to go with my European trainset. There is also a side effect that changes the colours of some GUI elements and windows, but it shouldn't be a problem as such, it's just different. I found everything perfectly legible, but please say so if you find a problem.
Of course, I would like feedback on the choice of colours I made, please tell me if you think something is too bright or looks awful on a certain vehicle, etc.
What I did to each colour: (OLD VERSION)
Dark blue: Used darker versions of the normal blue
Pale green: Made greenish-brown colour
Pink: Made into dark red
Yellow: Made yellower
Red: Same as original
Light Blue: Same as original
Green: Made into same as 2CC green, slightly darker
Dark Green: Same as original
Blue: Made into black (dark grey)
Cream: Default brown in 1CC, lighter beight in 2CC
Mauve: Made into reddish-brown colour
Purple: Used different purple
Orange: Default orange in 1CC, brighter orange in 2CC
Brown: Used much browner brown
Grey: Made light grey
White: Same as default pale green
Since I have changed some colours significantly, the names don't match up anymore and I don't think it is possible to change default strings via NewGRF (or is it?) so if this really bugs you, there is a patch included in the tar that changes the colour names to the ones in the screenshot in the UK English language.