Global symbol "%white" requires explicit package name at MyTest.pm line 33.
Global symbol "@browser" requires explicit package name at MyTest.pm line 33.
Global symbol "%blue" requires explicit package name at MyTest.pm line 33.
Global symbol "@browser" requires explicit package name at MyTest.pm line 33.
Global symbol "$diff_file" requires explicit package name at MyTest.pm line 34.
Global symbol "$blue" requires explicit package name at MyTest.pm line 34.
Global symbol "$diff_file" requires explicit package name at MyTest.pm line 35.
Global symbol "$diff_file" requires explicit package name at MyTest.pm line 38.