I found the jeans colour at westfield teatree in hairhouse warehouse, hate to say I'm not really finding it a patch on manic - I'm guessing different hair just reacts differently (as it were not that its really reacting as its not chemicals iyswim) but its giving a very slight hint of red just not a lot and it just feels like a lot of pigment is coming out in the rinse rather than staying in my hair.
Don't stress about what ph the shampoo is - I tend to coconut oil over night, bleach it directly over that ( just regrowth) then just joico moisturizing shampoo that out - if the cocnut oil is stil in the lengths at all I use redken clarifying shampoo over that, then no conditioner and just tangle tease and bung the manic on, again over night if I can ( so all day) but if not as long as possible. I have also had really good results taking a large jar if conditioner ( sometjing like dove or tresemme) taking most of it out and puting the manic in, mixing it in, then using it every other time in the shower again but just leaving in whilst washing body and rinsing.
Hope any of that helps :)
Ps if you want to get together ever to chat hair and stuff drop me a pm :)