Don´t get me wrong, but if you have no problem to ruin your mixer, just use a white fluorescing round sticker. I know that makes the button not bigger, but you will see it. Day and night.
+1 - I have no problem with the size. I think you can use the stick much faster, than a button (was using before an 552 and own a 744). Also you hear the record tone and see the red borders on the LCD display (much more information than on an 774, except the record tone)