Created attachment 111907 [details]
Color bleedthrough in searchbar corners

Discover has a tiny amount of bleedthrough of color from the search area into the corners of the search box.

This is more visible in darker themes where the contrast of the banner and primary colors is stronger.

This is shown in the attachment.

This is at odds with the conventions of other applications like System settings and Dolphin.

Steps to reproduce:
1) Open Discover
2) Look very closely at the corners of the search bar (It should have the same color as the center which differ from the borders slightly)
3) Optionally focus the search bar and the contrast will be much clearer