I was looking at it on the computer with the white background. I was able to read it on Tapatalk with a dark background.What color background are you using for quoted material, and is there anything other than grey (apparently the default?) available?
Yellow seems to provide the best contrast against black-ish colors, which is why I chose it. Boldface white wasn't cutting it at all.
I can try "unbolding" it, maybe the thinner brushstroke would be better.
I make no claims regarding expertise with forum softwares and HTML stuff. I do find XenForo much harder to work with than vbulletin.
Norm