Dimension font and height can't be changed?

I was surprised a week ago to find that there was no way to access and change model info settings for dimensions.
Now I can’t seem to find anyway of directly changing a new dimension’s font, style (eg bold) or height. I especially like dimension text that is a fixed height inches rather than view dependent points.
Is there a workaround that I don’t see?

Dimensions was exposed rather late - as late as SU2015. We’re still short on full coverage. I’ll file a feature request for this.