Celebrating their 10th debut anniversary, OH MY GIRL releases individual posters for their solo concert... What's the blue rose in the lamp?

The group "OH MY GIRL" unveiled a mysterious object, raising the excitement for their solo concert.
On March 10, OH MY GIRL posted the solo concert "2025 OH MY GIRL" on their official social media accounts.
Individual posters for "Milky Way" (hereinafter "Milky Way") have been released.
In the published photo, OH MY! is wearing a blue dress.
"Girl" boasts a mysterious and dreamy charm. All the members are holding lamps with blue roses inside. What is the connection between the blue roses and this performance?
"Milky Way" is a solo concert held to celebrate the 10th anniversary of the debut of "OH MY GIRL".
Through this concert, OH MY GIRL will summarize their accomplishments so far. Together with Miracle (the name of their fan club),
Looking back on OH GIRL's musical journey, we can expect to see a spectacular and beautiful performance like the Milky Way.
MY GIRL's solo concert "Milky Way" will be held on April 19th and 20th at the Olympic Hall in Olympic Park, Songpa-gu, Seoul.