bookmarks & fonts changed overnight ... help please

Hello forum
For some reason it seems my bookmark folders have gone a horrible gray colour and all the fonts have gone smaller, I really do not like this look at all, it looks cold and unfriendly if you can say that about a bookmark page

I am betting that this question has been asked before but I have been looking on search engines for a few days without finding an answer, now discovered this forum and am hoping that some kind person can help me to restore my bookmarks back to yellow folders and original font size.

I apologize if I am causing repeat information to be made, I am not very computer literate so hoping there is a not to difficult answer if there is one.

Thanks for any help.

Hi
Should have said that I am using Chrome.

Don't know if this is being done to lots of computers, I don't recall clicking on anything that would lead to this happening.

Thanks in advance for any help in getting my bookmarks back to how they were.

Hi
Here is a screen shot of my bookmark page with the gray folders which used to be a mid yellow colour, the bookmarks on the right now seem to be a smaller text and wider apart than before.



I have looked at what extensions there are and all I can find is this.

Google docs offline

below that is .....
(chrome apps)
Docs
Slides

All have the blue bar/button showing there on/enabled I am assuming.

thats all there is, don't know if this helps.

Thanks ............