Hi hi! I, too, am a bit stymied by the limitation here, even the threshold has been lowered. My brand orange colour isn’t actually light, and I’ve used it successfully for years on my website, Twitter, etc. My page looks amazing in the preview, but I’m not able to save the custom colour (which, for reference is #FB6433). I’d love love love to be able to use it, especially as I’m planning on hosting a membership drive with my first attempt at a special offer first thing in May. Thanks so much for being so responsive to this feature request!