Being color blind, I find the little red squiggly line that appears under mis-spelled words in WordPress TinyMCE editor window to be very hard to see. So I decided to change it to a solid yellow background, which makes it a lot easier to see my spelling errors!
You just need to replace one graphics file with your background of choice.
The file is located here:
Here is how to do it:
wline.gif file to something like
wline.gif.ORIG so that you have the original in case you want to change it back.
wline.gif file is 4 pixels wide by 3 pixels high, but I made my background 3 pixels wide by 12 pixels high. Use any photo editor that can create .gifs and make it transparent unless you want a solid background like I have.
Put your new
wline.gif file in the
directory and you should be good to go. You may have to clear your browser cache to get the new image to take affect.