I need an answer in the next couple days, thank you for your help!!

I know this subject is taboo since Koa is a beautiful wood as is, but I still need help with lightening it and google is failing me. I bought a Koa ceiling fan knowing it would probably be too dark/warm in color for our house. We have a ton of wood and plants in our house (has an indoor/outdoor coastal feel) but the woods we have, although different from one another, go together because they’re gray/cooler toned with hints of warmth. The dark koa wood fan clashes. I know green tint will help cancel out the warmth (I have Minwax driftwood) but still need it lightened, too. i’ve already tried Zinsser A/B bleach multiple times, which seems to have lightened the stain a tad bit. I also sanded it down a little after the fact but it’s still pretty dark. What can I do now? I’d like the finish to be even/matte. TIA!