Separate Power Supply stable supply needed

I was powering this via the same 12 Volts going into a RAMPS 1.4.

The RAMPS 1.4 uses a PWM to adjust the temperatures of the Hot End and Heat Bed.

This caused some signal feeding back over the Power Supply to this unit causing the RGB LED not displaying the correct colours sometimes.. (false signal added to the Power Supply from the RAMPS 1.4 PWM system).

Using a Separate Power Supply stable supply appears to work better using an initial test. Displaying the colours for temperatures better.