Pair 188:
Took way longer than it should have to find that gold medal change. Chalks it up to another case of overfocusing. Counted the three little dots above and below it. Passed right by the far larger thing.
Pair 189:
1. Added an extra circle to the Poisoned status
2. Dropped from 273 hitpoints to 263
3. Changed the right-hand reflection of Inteleon's eye to green
Looked at that reflection early on. Focused mainly on the head fin. Was not looking for a color change. (Changes pretty drastically, for the record.) Might have been paid less attention to color because of the sheer amount of sparkles and rainbows in the image. Shrugs.
Pair 190:
Scoured this for a long time. Persisted only because of fewer areas for change. Spotted the Dragalge and shadow change. Got stuck on the sock spot. Gave everything several looks over. Scrutinized Bruxish and the minimap the longest, probably. Came back the next day after being stumped the day before. Likely helped to have both images open in Paint and zoomed in this time. (Usually only opens Paint to mark changes.)