Members for class resolved by a macro are not always recognized

#define EXPLICIT_RUN \
    void Foo::Run1()
#define BASE_RUN(parent) \
    void parent::Run2()
#define DERIVED_RUN(parent) \
class Derived : public parent { \
public: \
    void Run(); \
}; \
void Derived::Run()

class Foo
{
public:
    void Run1();
    void Run2();
    int bar;
};

EXPLICIT_RUN {
    bar; // brown
}

BASE_RUN(Foo) {
    bar; // black
}

DERIVED_RUN(Foo) {
    bar; // black
}

#include <gtest/gtest.h>

class FooTest : public ::testing::Test {
protected:
    int foo;
};

TEST_F(FooTest, First) {
    foo; // black
}