PVS-Studio warning V536 for Chromium

// Coefficients used to convert from RGB to monochrome.
const uint32 kRedCoefficient = 2125;
const uint32 kGreenCoefficient = 7154;
const uint32 kBlueCoefficient = 0721;
const uint32 kColorCoefficientDenominator = 10000;

This suspicious code was found in Chromium project by PVS-Studio static code analyzer.
Warning message is:
V536 Be advised that the utilized constant value is represented by an octal form. Oct: 0721, Dec: 465. pwg_encoder.cc 24

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/