Jay53 ✭

Finally got the MK-F keyboard to "customized backlighting mode" to work. The super sparse (being generous here) documentation does not mention that it only applies to the five gaming layouts, accessed by FN+1 thru 5. Select a gaming layout, and then hit FN+Home. The keys all go blank. Then, press the desired keys to light them. Pressing a key multiple times changes its color. When you have the layout you want, press FN+Home again to exit. This layout will be remembered until you reset the keyboard with FN+ESC.