Current models of ultrashort pulse propagation in solids describe the pulse evolution of fields with broad spectra and are typically coupled to models of ionization and laser-plasma interaction that assume monochromatic laser fields. In this work we address some of the errors in modeling photoionization of transparent solids introduced by combining these inconsistent descriptions. We also describe a treatment of multi-chromatic non-equilibrium laser-material interaction in condensed matter in order to couple this model to a unidirectional pulse propagation equation for the field evolution. This approach, while more computationally intensive than the traditional single rate equation for the free electron density, is intended to reduce the number of adjustable phenomenological parameters typically used in current models of plasma generation in solids. Our initial results suggest that intentionally multi-chromatic fields (i.e. strongly chirped pulses or co-propagating pulses of different frequencies) can be arranged to significantly alter ionization yields and hence ultrafast laser induced material modifications.