Items shouldn't have solid backgrounds, if at all
Look at the bracer .. Its orange on an orange shaded background.. Looks like shit
Look at blink dagger, everything is blue.. again no contrast, hard to tell whts there
and so on

Then the Icon contour > rectangular. Theres no need for this, have a faded random oval shape of the item

I'll say it again, these problems are veru noticeable in the grid view for shop. Icons backgrounds are really messed up taking wuality to -30%