Looking at the datasheets, I’m not sure their specifics match;
TIP127 and ULN2003A
My intention is to do something like this, but with the ULN2003A, that I have already:
The reason why is that I want to remove the provided driver/power supply (5V, driving 6 LEDs 0,25W each) and use PWM with the RPi to dim the strip’s leds (using an external 5V power supply). I’ve already done this to regulate a 12V fan (but I understand this is another story).