What has happened here?

I pressed the left hand side on Monday and pressed the right just now. Same material same time and pressure. The left is on the front and the right on the rear. The top one in the image was also pressed on Monday.
Could this darkening be from the clothing bleeding through. The top is a AWD JC036https://uploads.tapatalk-cdn.com/201...7334f4e392.jpg


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https://uploads.tapatalk-cdn.com/201...3ba21c649f.jpghttps://uploads.tapatalk-cdn.com/201...3b53265854.jpg

These two are on the same garment but different colours. First is male version on gray 2nd ladies black. The green should be a bright fluorescent.


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