Experimental, color fonts UseYourImagination R, B & G . OpenType SVG color font (SVG-in-OT) format is proposal for multi-color, vector fonts. To be able to use the color fonts you need to have installed Adobe Photoshop CC2017, Adobe Illustrator CC2018, Mozilla Firefox or Microsoft Edge.
If your program don't support OpenTypeSVG fonts, you can use online SVG images generator: