I downloaded illustrator (beta) And now all my files thumbnails are white instead of orange.

[Kira36472212p5vk]

This is literally the least of my worries but it is an annoyance, when looking for files in file explorer or the 'place' action, my file thumbnails for illustrator are now all illustrator (beta) white with a blue Ai, rather than the classic orange with a yellow/orange Ai, i then uninstalled the beta version, i was only looking at it for the 'turntable' (very exciting feature) but they havent changed back.... 
Why is this?
I have no files made/saved as Illustrator (beta)

[Doug A Roberts]

What happens if you change the 'open with...' setting back to your regular Illustrator installation?

[Kira36472212p5vk]

I uninstalled the beta version, so files i open can only open in the normal illustrator software. Theres no other option in 'open with' other than other adobe programs
The files open fine, its just the thumbnails are different and im a creature of habit. 🙂 I liked the distinguising colours between files. 🙂

[Doug A Roberts · Accepted solution]

Changing the 'Open with...' setting should change the thumbnails too. Select your Illustrator program file:

[Kira36472212p5vk]

Well, i feel like a numpty hahah! 🙂 Thank you! 🙂