What change was made to the Royal Marines' shoulder flash as part of their new uniform?

The change to the Royal Marines' shoulder flash was a shift to a navy blue and red Velcro patch, reflecting a modernization of their uniform while maintaining a connection to their heritage through color symbolism. The use of Velcro allows for greater versatility and practicality in wearing the uniform, catering to operational needs and flexibility in various environments. This adaptation illustrates the Royal Marines' commitment to evolving their appearance in line with contemporary standards while still embodying their longstanding traditions.

The other choices do not accurately represent the actual change made; the new design specifically emphasizes practicality with the Velcro attachment, which distinguishes it from traditional patches and provides operational advantages.