LSWR and SR colour swatches
The HMRS (there's a link to them on the LINKS page...) have over the years published a series of Livery Registers, and I recently acquired one second-hand for the LSWR and SR. Unfortunately there was no colour swatch card inside - though there is a reference to it as Appendix 4 - so I've had to make my own.
There was however a list of all the colours as Munsell, and BS codes, and from this I've gone to the trouble of finding the Munsell shades from a .pdf sample online, and setting them out onto 5 x 7 inch (13 x 18 cm) photo-sized format images, which you can then download and print off to produce your own swatch cards - either on your own printer or using someone like Boots (preferred - as they should be able to render the tones more accurately than the average PC printer).
To save them onto your own computer -
Mouse RIGHT click on the image
Select Save Image As or Save Picture As
Navigate to the folder on your computer where you want to save the image, and click the Save button.
Colour swatches sheet 1 - with Munsell codes
Colour swatches sheet 2 - with Munsell codes
Colour swatches sheet 3 - with BS381-C codes
Where I've not been able to locate the correct colour swatch from a chart for reference, I've noted which code I have used instead. If possible, I've chosen the nearest colour value to the reference number cited by the HMRS Register. Where this has not been possible, I've relied upon the original colour name, referring to colour photos of the prototype where available - this has been especially so in the case of the three SR paint codes that have not made it into later editions of BS381-C.
Do bear in mind too that though these may have started out as actual colour values within a .pdf document, there has probably been some opacity loss/hue-shift during the cut and paste operations as sample formats were switched from RGB to JPEG and vice versa.