Few months back I came to know about this dictionary shell app.
And there was discussion thread in Russian.
The official and unofficial version of it. Rather than using the dictionary I played with the apk a lot. The final results in classic mode.
The Dark Classic Mode
The Enhancer Mode
The Enhancer in Dark Mode
You can further tweak with article-style.css
And with article-style-night css
Finally I was doing all these because there was floating windows bug in pocketbook reader which I use to read books. Not the one I desired but yet working now…