I made my own check ON/OFF for grids. Wanted something visible in most background colors

 

Replace the corresponding files in the \AppFiles folder

(I personally created an "icons" folder there, so that default icons can be easily replaced after an update -  an update will obviously replace your custom ones with the defaults.)

 

[SOLVED - Pierre : is it possible to add the possibility to attach *.ico files? (And maybe other types needed for IQ -- don't know which one.)]