Digital Light & Color

There are two similar flashlights: one magenta with a black middle section and one steel bluish. I want to recolour the magenta (but not black) to see how it would look in the steel-blue version. Looks like I'm getting rusty because I can't do it cleanly. Could someone point me in the right direction?

I had the best results with Selective Color Correction - could be cleaned up a little but you should get the idea: I also tried Color Curves and did a hue shift to magenta and darkened the image.

Using a mask for the flashlight would make it easier to adjust since you could alter the brightness and shift all the hues and only the masked area would be affected.

Cheers for that. I used the Selective Colour Correction with just one vector and with the right weight it can capture most of the colour to correct and then darken it too. I wonder why I was spectacularly unsuccessful with Remap? I also found that matching, even approximately, the target colour is a challenge. I tried using Palette tool and guess the position of the hue/saturation on the colour wheel but found it quite hard.

Remap is specific to a particular RGB color while Selective Color Correction is specific to a hue/saturation combination, ignoring brightness.

The Hue-Saturation transformation works even better:

One method is to work with hue curves :

For magenta to blue :

Similar for blue to magenta :