DT Swiss GRC 1400 Dicut 50. Valve length?

Hello! 

I am planning to purchase DT Swiss GRC 1400 wheels with a rim height of 50. I would like to replace the standard valves that come with the set with purple ones, which will better match other accents on my Canyon. Does anyone know the length of the factory valves? 

I currently have wheels with a rim height of 25 mm and 44 mm valves. It's perfect. 

I'm wondering if 60 mm valves would be suitable for 50 mm rims? I assume that only about 15 mm would actually stick out of the rim.