That font, mathjax calligraphy, only has uppercase letters. That's the font the customer saw and liked so that's what I used. My current favorite font is Z003 and is much more readable and has both upper and lower case letters. Painting the inside of the letters was a royal pain, I ended up thinning the craft paint (gloss white) 50/50 with water, then dripped the paint into the recesses with the small hole in the cap, once the letter was full I used a small wire (ornament hanger) to stir the paint around in the hole and get better coverage/adhesion of the paint.