When Activity bar is hidden, Explorer seems to be a little bit cramped to the edge compared to the original ayu theme. It would be nice to increase the margin between the window edge and Explorer:
Perhaps, something like this, where a caret is inline with a status bar and Explorer icons are inline with EXPLORER title text:
Looks way cleaner to me (this is "#workbench\.view\.explorer > div > div > div.split-view-container > div.split-view-view": "left: 9px; width: calc(100% - 9px)")