HUNDREDS of Cardiff Blues fans are set to descend on Dublin ahead of the weekend's Heineken Cup clash.
However, despite the quarter- final being promoted as the battle of European rugby's two blue teams, the Welsh side will be "thinking pink".
Although they will be greatly outnumbered by Leinster fans, they hope to stand out by wearing bright pink.
Graham Prance, away-trips organiser for Cardiff Blues Supporters Club told the Herald that he thinks it's important that the Welsh fans make an impact while they're in Ireland.
"Obviously Leinster will be wearing blue as well at the weekend, so we want to make sure we make our presence felt. That's why we've chosen pink as the official tour colour," he said.
"We've got pink hats as well, so we'll definitely stand out."
The Cardiff Supporters Club will have a "blues HQ" set up in the grounds of the Sandymount Hotel which will be filled with Welsh fans in pink outfits, who are hoping for a result as shocking as their jerseys.
Cardiff Blues are still smarting from a 31-3 hammering against Glasgow on Friday night and the subsequent sacking of star Gavin Henson.
Blues boss Justin Burnell said that he would dread to see the score line on Saturday if the Welsh side played as badly as they did in Firhill.
"If we perform like that against a team like Leinster, I wouldn't like to imagine what the score will be," he said.
However, Blues fans are hoping that the Grand Slam effect will help them achieve an upset against the reigning European champions.
The last time a lot of Cardiff Blues players were in the Aviva, it was for Ireland's Six Nations defeat against Wales.
"We are definitely the underdogs, so I'm hoping the Grand Slam will make a difference," Graham said.
"The state of regional rugby isn't great in Wales at the moment, but I'm still optimistic."