Since everyone kept posting their shiny bonks, I thought I'd show off a few of my own
Ngl, I just like making shiny Bionicles.
The Rahkshi at the very end might be a bit of cheating, since I spraypainted their spines and chest pieces black. However, I just wanted to make spines that were the opposite color of the one singular White spine you can find in one of the viking sets. Aside from that, I wanted to use the Dark Bluish Gray feet, thighs, and body pieces alongside the yellow limbs alongside the Rahaga colored Rahkshi heads and Hordika weapons.
Edit: Ah shoot, I forgot to include a picture of my Shiny Keehrak Vahki that uses Dark Bluish Gray limbs and head, red chest piece, and the red and black swords from the one Exo-Force Set.
Edit2: Of course an hour after I posted this, the rest of the parts came in for my Shiny Vakama Hordika. He's got the Black version of the Dark Red flame claw pieces and a Silver/KeetOrange spinner.