Tweaking generator colour warnings a bit more ⚙️

We've received some feedback from you - our users about the changes we've made with the generator warnings recently. We really think we've made a big step in the right direction, but there were a few things that could be improved a bit.

I've been working really hard with our moderators today on deciding which colours are ok and which not to show yellow / green warnings for. So a bit shoutout also goes to them, mainly @Tikillishi and @KrazyKnotz!

First of all, I want to remind you that 'green warnings' are not a reason to decline every pattern that has them. They're just informative and are helping both our users and moderators to see what could potentially be improved in the pattern. You don't really need to be fixing each and every one of them, if you know what you're doing. For a lot of patterns, some of them can really be just ignored. You should always read them, but if you feel like it doesn't really make sense to you, feel free to submit your pattern, and maybe also let our moderators know the reason why you think it's ok in the 'Review notes' field. This is also written in our public review guidelines, but I wanted to let you know, just in case you forgot about it 🙂.

And now to the changes that were made:

- 'yellow warning' for dark colours got a bit looser, so you can now submit patterns with a bit darker colours.
- 'green warning' for dark colours also got a bit looser, to prevent flagging colours that are ok to use.
- 'yellow warning' for similar colours was added, as it wasn't there before. It prevents submitting patterns with very similar colours to the site. This shouldn't prevent your from creating gradients for example, but should help us avoid having patterns with 'duplicate' colours in the database.
- 'green warning' for similar colours got a bit more tight, to help us seeing even a bit less similar colours that could otherwise be missed during the review

We also changed the text of some warnings a bit, so that the 'green' ones don't seem that pushy. They're just there to inform you that it might be a good idea to double-check a few things before submitting your pattern for a review.

I really hope all these changes will make sense to you, and I also want to ensure you that if we find anything about them that could be improved, there's nothing keeping us from tweaking them even a bit more.

Have a great day everyone, and take care! ❤️