Change font color and size on the desktop

You can change the text size from 10 to 16 points. You cannot make it bold or italic.

There is no option to change the text color. The OS automatically decides to make it black or white, based on the background color.

Right click anywhere on the desktop and choose the options palette as I showed above.

For the second, satcomer is referring to the ability to copy/paste an icon from one source to another with the Get Info palette. It will do nothing for text.

Click on space spot and go to Finder’s view section! Also you could control click a file and do a Get Ifo on highlighted file/folder and change what looks like!