Leaves Changing Colors

Exposure Date: 2010:11:01 05:31:27;
Make: Canon;
Model: Canon EOS 50D;
ExposureTime: 1/500 s;
FNumber: f/6;
ISOSpeedRatings: 320;
ExposureProgram: Manual;
ExposureBiasValue: 0;
MeteringMode: Pattern;
Flash: Flash did not fire, compulsory flash mode;
FocalLength: 187 mm;
Software: Adobe Photoshop Elements 7.0 Windows;