How to detect website theme

Songs Lyrics WordPress theme have facility to post song lyrics with all the meta fields like artist,album, year all the required field also having facility for visitor to upload the lyrics from front end.

Any one will provide me this in WordPress?

likely this website:
https://www.lyricsearth.com

The example link:


I detect that it uses ColorMag - Magazine Style WordPress Theme.
You can find information here: