The tube roundels at Southwark station are going to look a little different this weekend

It's all change at TfL this week. First, they redesigned the iconic Johnston font, and now they've totally changed the colour of the tube roundel at Southwark tube station. Instead of the usual red, white and blue, it's pink, turquoise and bright green.

But don't worry, they haven't totally lost the plot. It's been redesigned by artist Michael Craig-Martin to mark the opening of the new Tate Modern, which launches this weekend. The seriously Instagrammable new roundel will be on display at Southwark tube station (the closest station to the gallery) from today until June 19, so check it out while you can.

Check out our pick of the new Tate Modern's best bits

In other tube news, Lambeth North tube station is closing for seven months from July