Yes, I saw the above question/request last night and even tried to make something in PhotoShop but quickly realized it would confuse a lot of people and even appear contrary to the worded description if I used the colored cauldrons along with my particular ingredients. Since it depends upon your particular 'color set' this time I used words instead.
I usually prefer picture diagrams, too, but in this case would have caused more confusion than necessary. Also, I should hope we all found our way through the progression, but just in case not, I will try to sum up my original intention here, hoping to not sound overly-complicated once again.
Anyone wishing to try this method should first be prepared to start over a few times anyway, just to get the hang of what each ingredient "singularly" does first. In this example, it may seem a little tricky, since we all start with a red cauldron, and it just so happens that adding a 'red ingredient' to the red pot will turn it green. But this must be observed, a slight backwards logic, reduction, so that one can determine which is the 'red' ingredient and which is actually the 'green' ingredient.
I am pretty sure that only three of the five ingredients need be used, based on the assumption that we all must have one red, one green, one blue ingredient and the other two ingredients could be either red, green or blue (with one of those last two being a "revert").
Mine happened to be, from left to right, blue (root) / green (leaf) / red (berry) / green (salt) / blue (herb). The herb threw any previously predictable sequence out the door, so I avoided that thereafter. I did not need it at all in my end sequence. This is what I consider to be a "revert."
After realizing I was trapped in this 'only able to change the cauldron red, green or blue' I realized somehow these 3 colors in a particular sequence had to lead to (the first) purple so that I could get on with color-changing.
I followed the color order posted at the beginning of the release of the step, and at least managed to repeatedly make red > green > blue. But wondered what to add to make purple. I just clicked what would have / should have turned the cauldron 'green' again and voila there was my first purple. From there it was similar trial-and-error but in a more orderly and logical way, at least for me.
Since this post is already so long, here is a link to my original post on the color-addition/reduction method. So long as one knows how to make the first red, green, blue and from that able to get to their first purple, the rest should fall into place according to my original color diagram I
posted. (And, yes, do watch out for the red / green effect. As noted, adding red to an already red cauldron will turn it green, not keep it red. At first this made no sense to me until I did it a few times.)