  In analogy to null electromagnetic fields we define null YM fields. We show
that the null non-abelian $SU(N)$ gauge fields admit a set of $2 N^2$ conserved
"helicities". We derive null YM solutions that carry finite helicities by
uplifting the abelian Hopfion solution and their generalizations. Another
method that we implement is to deform YM solutions which do not carry
helicities into ones that have nontrivial helicities. A nontrivial non-Abelian
solution with helicities is found as a wave of infinite energy. We also discuss
non-abelian generalizations of the Bateman parameterization for null abelian
gauge fields.
