create color font

I been searching, download a couple of programs that let you take images and convert them into to font but none let you obtain the color, they all switch them to black and white. Searching the internet I found little on color font but yet almost all games have them. Their own font that are colorful. How do they did it?? Did they just opt to program the font in via code to be position and place? Or is there a free program that let you create font true type font ttf and open type font preferred. I just like to make my own font from the image that I created. And the image aren’t even that colorfully just a fill and stroke color.