Limit Switches with LED's

[HankMcSpank]

Assuming 20mA to drive the LED and a 1.2 Volt drop across it, about 190 Ohms for the resistor.

Personally I'd have gone with a resistor for each LED (to get their respective brightnesses balanced right)...therefore I'd connect the common anode direct to 5V & then place a current limiting resistor in each of the the LED cathode legs (the fwd voltage of a red led is about 2V, whereas a green led is about 3.2V ...therefore to get the right level balanced you'll likely need different value resistors).

Also 20mA - depending on LED - is gonna be very bright, I'd have aimed for 10mA or less.

Edit: Actually the way Robin has drawn it, for the red led you'll get a drop across the tranny itself, which pretty much balances the fwd voltage difference out for the red & green LEDs, so you may get away with a 180R single resistor for both....a 180R resistor will yield about 10mA through the LEDs