# Implications of momenta sign conventions in QCD Feynman rules

In QCD, the Feynman rules for the vertices are usually presented with all momenta pointing inward. For the total amplitude of a given process, does this also affect the signs of the momenta taken in the incoming and outgoing spinors/polarisation vectors? Or do I only need to be concerned with the vertices which depend explicitly on the momentum 4-vectors, like the 3-point gluon vertex?

Thank you very much!