Weird lines outside and colors in Windows 10

I was using my laptop yesterday and I noticed that there's something strange happened to my desktop. It has lines between the edges of the box, like a border line outside; it's on the search bar (look photo #1), date and time. And every applications that I use has a weird color in the sides (look photo #2). Thanks in advance

Hello @

gigoyl , welcome to tenforums! :)

It may be that you have an 'Aero-Lite Theme' running,
try switching to the default Windows Theme and reboot...

Man, I don't have those 'Aero-Lite Theme', but I just changed my theme back to Windows and it worked. Thank you!