I wouldn't trust the colors in old pictures.
According to Wiki quoting Freeman, Roger A. (1991). Mighty Eighth War Manual. . ISBN 0-87938-513-8. Page 291.
"When P-47M's appeared in January 1945, each squadron adopted an individual camouflage scheme on upper surfaces while lower surfaces of the fighters were left unpainted. The 61st used a matte black color that faded to a dark purple. The 62d continued the green-and-gray shadow-shading pattern, while the 63d went to a shadow-shading pattern of "deep Mediterranean blue" (indigo) applied over sky blue."