Colour codes on identical Tags is not maintained when Epic is Copied

Issue Summary

When an Epic is created with a copy of an existing Epic having tags, the tags on the new Epic have a different colour, though the value remains the same

Steps to Reproduce

1. Navigate to Portfolio > Epic grid
2. Select an existing Epic with Tags
3. Copy Epic to create a new Epic

Expected Results

New Epic is created with same Tags and Tags maintain the same colour as in the original Epic

Actual Results

New Epic is created with Tags, but the Tags have different colours not matching the original Epic.

Workaround

Tags on the new epic have to be deleted and recreated. When recreated with the same value as the original epic, the same colour is applied.