For example: it downloaded Hero and Cover images for Prince of Persia but not the logo. Actually it didn't download the missing ones for any game. I tried with -styles "official" and the same without quotation marks.
Changing line 149 in download.go to only "filter := steamGridFilter"
Also changing line 74 in steamgrid.go to "steamGridFilter := "&styles=" + steamGridStyles + "&types=" + steamGridTypes + "&nsfw=" + steamGridNsfw + "&humor=" + steamGridHumor" - as checking logos in browser gave me no results unless I changed "?styles" to "&styles"
For example: it downloaded Hero and Cover images for Prince of Persia but not the logo. Actually it didn't download the missing ones for any game. I tried with -styles "official" and the same without quotation marks.