  In this paper we introduce the concept of decorated character variety for the
Riemann surfaces arising in the theory of the Painlev\'e differential
equations. Since all Painlev\'e differential equations (apart from the sixth
one) exhibit Stokes phenomenon, it is natural to consider Riemann spheres with
holes and bordered cusps on such holes. The decorated character is defined as
complexification of the bordered cusped Teichm\"uller space introduced in
arXiv:1509.07044. We show that the decorated character variety of a Riemann
sphere with s holes and n>1 bordered cusps is a Poisson manifold of dimension 3
s+ 2 n-6 and we explicitly compute the Poisson brackets which are naturally of
cluster type. We also show how to obtain the confluence procedure of the
Painlev\'e differential equations in geometric terms.
