Rage (status effect)
From the Super Mario Wiki
Rage is a status effect in Paper Mario: Color Splash, inflicted only by red paint in the battle with Roy. Similar to the Heavy G status in Mario & Luigi: Superstar Saga and its remake, while Mario is in this state, he is covered in red paint and gets very angry, to the point that his action command speeds up, lessening the input window for attacks. The music also becomes frenetic. Like all other status effects exclusive to said battle, the effect is temporary and only lasts one turn.