Requires a Deep Base Paint Recommended Base Paint: Deep Base Interior Flat Wall PaintBleu c�rul�en 31 the first and darkest nuance of the fivecolor coelin blue series of the Le Corbusier collection of 1931. These blue shades look warmer and retreat less. bleu c�rul�en 31 looks powerful and creates dynamic areas.In his illustrative mood ��Checkered I�� Le Corbusier combines bleu c�rul�en 31 as basic colour with nuances of red ochre & brown umbers with grey and with red shades.Bleu c�rul�en 31 the first and darkest nuance of the fivecolour coelin blue series of the Le Corbusier collection of 1931.These blue shades look warmer and retreat less.bleu c�rul�en 31 looks powerful and creates dynamic areas.In his illustrative mood ��Checkered I�� Le Corbusier combines bleu c�rul�en 31 as basic colour with nuances of red ochre & brown umbers with grey and with red shades����