  We combine JWST/NIRCam imaging and MUSE data to characterize the properties
of galaxies in different environmental conditions in the cluster Abell2744
($z=0.3064$) and in its immediate surroundings. We investigate how galaxy
colors, morphology and star forming fractions depend on wavelength and on
different parameterizations of environment. Our most striking result is the
discovery of a ``red-excess'' population in F200W$-$F444W colors both in the
cluster regions and the field. These galaxies have normal F115W$-$F150W colors,
but are up to 0.8 mag redder than red sequence galaxies in F200W$-$F444W. They
also have rather blue rest frame B$-$V colors. {Galaxies in the field and at
the cluster virial radius are overall characterized by redder colors, but
galaxies with the largest color deviations are found in the field and in the
cluster core. Several results} suggest that mechanisms taking place in these
regions might be more effective in producing these colors. Looking at their
morphology, many cluster galaxies show signatures consistent with ram pressure
stripping, while field galaxies have features resembling interactions and
mergers. Our hypothesis is that these galaxies are characterized by dust
enshrouded star formation: a JWST/NIRSpec spectrum for one of the galaxies is
dominated by a strong PAH at 3.3$\mu m$, suggestive of dust obscured star
formation. Larger spectroscopic samples are needed to understand if the color
excess is due exclusively to dust-obscured star formation, and the role of
environment in triggering it.
