Thanks for the replies guys.
Sherav – the weight loss has been slow, steady & sensible. 50lbs in the last 15 months. Probably got another 25/30lbs to go. Thanks for the colour info too.
Outlaw – as it’s a lower back piece it won’t get much exposure to sunlight, except on holidays so it should be ok.
Butterfly_Kisses – how old are your pieces? are there any signs of the purple fading?
Thanks again all.