Hello Quinn,
you can change the opacity of a raster image in the Properties panel of the map. To access the panel, double-click on the name of the map in the View Components panel, then reduce the opacity and click on Apply.
Alternatively, you can change the order of maps by drag & drop. The drawing order of maps in FEFLOW 6.2 has changed as the Maps and also the View Components panel now offer much more flexibility related to the grouping of maps.
Best regards,
Julia