TARDIS 2005–10, the roundels are built into hexagonal recesses in the walls. Ever since the TARDIS was redesigned at the beginning of the 2010 series, there have been a range of different roundel designs around the console room. These include circular holes that are recessed deep into the walls, hexagonal holes that are lit from behind each face, round indents with brass rings around the outside, and a glass centre that is illuminated blue. In "The Day of the Doctor", when the TARDIS' control room briefly appears as the War Doctor's room, the Eleventh Doctor points out to the Tenth Doctor
Blue wall (politics) Blue wall (politics) "Blue wall" is a term that has been used by some political analysts and pundits referring to the theory that in Presidential elections in the United States, the Democratic Party had, between the 1992 and 2012 presidential elections, established such an advantage in many, mostly contiguous (hence "wall"), states that the electoral map made a Republican victory an uphill battle from the start. George W. Bush won the 2000 presidential election and the 2004 presidential election, but did so by winning only states outside of the blue wall. The 2016 election showed this wall was not impregnable,