(main developer of Terminology here)
As stated on https://phab.enlightenment.org/T746, it is not an easy move due to the way the text grid is designed.
I love Terminology, and the entire 90s vibe of EFL and Enlightenment generally. So unashamedly not flat design in a world of Jony Ive / Google Material Design conformity.
unrelated: are you the billiob that used to contribute to aMSN back in the days?