Hi Guys,
I forgot to mention, The yeast is "Burton Ale yeast" by White Labs.... I used a Chlorine powder to clean the demijohns, I did fill them up twice and thought I had them properly rinsed.
I didn't notice any rainbow colours, but maybe that only happens with soap, not Chlorine?
I'll report back with with a taste test...I hope it turns out well, It's the first White labs Vial I ever used. Maybe I'll like yeasty tasting beer...