Hey there is no green,red and yello testing. According to me there are only Blackbox,whitebox and Graybox testing.

There  is no red& yellow box testing.But Green box testing 
is also called as User Acceptence Testing/ Customer 
Acceptence testing.

Red-Box testing: Acceptance testing, often referred to as
Red-Box testing.


Yellow box testing:  Yellow box testing is checking against
the warning messages. The system properly throwing the
warning messages or not?


Green Box Testing: Takes external perspective of the test
object to derive the test cases, determine whether the
system is environment friendly and also not having any
social implications along with the defined set of requirements.