The Magenta Challenge 2: Back to the Fuscia

A sequel to this challenge from about 17 years ago. This time around, though, it's a little different - there's no set palette (see below for details). As well as that, for every non-magneta colour that is in the image, there needs to be one magneta added. So, if you have three colours, then you will need to add three magentas to the image as well; meaning the total amount of colours in your image will be six.

Canvas Size - Exactly 128 x 128.
Colours - Min 8. Must be an even number of colours. Exactly half of the colours in the image must be magenta.
For the purposes of this challenge, we're going to define 'magenta' as anything with a hue of 300 and a saturation of 100 in HSL.
Transparency - Optional.
Animation - Optional.