The PJ41 Io Images PJ41_01 through PJ41_05 are displayed with various processing styles.
The upper-left group is approximately color matched to the USGS "Io Galileo SSI Global Color Merge Mosaic" at https://astrogeology.usgs.gov/search/map/Io/Voyager-Galileo/Io_Galileo_SSI_Global_Mosaic_ClrMerge_1km
The upper right group is processed using my current Jupiter natural-ish color balance.
Lower left uses a Nearest rather than Linear sampling to clearly show the underlying resolution of the raw image.
Lower right has a low gamma value to show the detail in the darker areas. Perhaps a plume is visible at the lower right limb of PJ41_02 (the 2nd image). Also, there is slight illumination beyond the terminator (on the dark side of Io), possibly from Jupiter-shine.