Newport Tracks comes with three choices of colour palette - one beautiful pastel colour variation and two minimal greyscale variations (light and dark). You can adjust the colours converting your type to paths and working from there.
Also included are PDF, EPS and Adobe Illustrator files of the character sets in each variation.
The package contains a colour font file in SVG-OTF format for each colour, greyscale dark and greyscale light variations. To use these files you need to have installed Adobe Photoshop CC2017 or Adobe Illustrator CC2018.
Not all browsers support colour fonts so it may be best to use them as graphic elements.