i need to search a richtextbox for any text between << text >>

then change its color to blue including the word befor the brackets

example:
text befor searching
In all our MBA and MSc programmes, you can <<choose from a range>> of elective modules to personalise the content of your degree. Alternatively, you can follow one of <<our Specialisation>> Tracks to acquire a more focused set of skills and knowledge. This means that you can choose modules that are relevant to your <<needs today as well>> as those that will formalise your

text after searching
In all our MBA and MSc programmes, you can <<choose from a range>> of elective modules to personalise the content of your degree. Alternatively, you can follow one of <<our Specialisation>> Tracks to acquire a more focused set of skills and knowledge. This means that you can choose modules that are relevant to your <<needs today as well>> as those that will formalise your