Screws for DMM, multi-color LED?

[plunderpot]

I recently purchased a broken EH Deluxe Memory Man and fixed it up (broken input jack), and it's wonderful.  The previous owner had lost all of the screws that secure the bottom plate.  Does anyone know offhand what size screws these would be, and if I might be able to find them at a local hardware/etc store?

I've also thought about adding true bypass (I'll decide once it's spent some time on my pedalboard), and considered changing the power on LED to a bi-color LED to show the status of the switch.  Does this sound do-able?  Any ideas on how to accomplish that?  I've been trying to hunt down bi-color LEDs, but for the life of me I can't master Mouser's search.   

Thanks!  All the best,

J