From the Super Mario Wiki
Self-conscious is a status effect in Paper Mario: Color Splash, inflicted only by orange paint in the battle with Roy. While Mario is in this state, he is covered in orange paint and stands still with an embarrassed look on his face with his hands down in front of him, yet he seems to float, as his feet don't touch the ground. In this status effect, can only use fully painted cards. Like all other status effects exclusive to said battle, the effect is temporary and only lasts one turn.