Confectionery giant Cadbury has insisted it is not trying to trademark "50 shades" of purple after coming under fire from a Church of England bishop over rights to use the colour.

The company said its victory in a dispute with rival Nestle over purple packaging did not amount to a bid to copyright all shades of purple – but merely to protect the Cadbury purple associated with its milk chocolate.

"We are not seeking to trademark 50 shades of purple, it is about making sure the consumer is not confused into thinking this is a Cadbury product – that is the nature of a trademark," a spokesman for Cadbury said.

The remarks were made after The Meaningful Chocolate Company claimed it had changed the colour of its box containing religious chocolate Christmas tree decorations after receiving legal advice that anything that could be interpreted as Cadbury purple should be avoided.