Apple OS 10.10 Yosemite - get rid of DropBox green ticks

I've finally decided to install Yosemite - I skipped Mavericks to allow a few bugs to be eliminated.

Now to customise it to what I prefer - that is, the best of the old with the best of the new.

DropBox

If you depend on DropBox, as I do, you will instantly see that your list of files has acquired a column of garish bright green ticks, indicating that DropBox has synchronised the file. What a horrible idea!
Here is how to get rid of this distracting feature. Thanks to the Apple user discussion, referencing this link: http://www.mrh.is/writing/about/how-to-get-rid-of-the-new-dropbox-checkmarks

1. Download the latest DropBox app, from the DropBox website. Follow instructions to install it.
2. Open your Applications folder and find the DropBox app. 
3. Right click on the DropBox app and select Show package contents.
4. When the folder opens, click the down arrow to show the files and folders. Find Plugins and click to show what's in that.
5. See garcon.appex and again, right click to Show package contents and open the Contents folder.
6. Then in the Resources folder, click the down arrow to show the contents.
7. You will see the offending green tick, named overlay-uptodate.icns
8. Rename that file either by right clicking on it, or by clicking slowly,  - I called it overlay-uptodate-old.icns .
9. Close all those folders. 

You might need to restart your computer, but the green ticks will be seen no more.