  During solar flares, magnetic energy can be converted into electromagnetic
radiation from radio waves to $\gamma$ rays. Enhancements in the continuum at
visible wavelengths give rise to white-light flares, as well as continuum
enhancements in the FUV and NUV passbands. In addition, the strong energy
release in these events can lead to the rearrangement of the magnetic field at
the photospheric level, causing morphological changes in large and stable
magnetic structures like sunspots. In this context, we describe observations
acquired by satellite instruments (IRIS, SDO/HMI, Hinode/SOT) and ground-based
telescopes (ROSA/DST) during two consecutive C7.0 and X1.6 flares occurred in
active region NOAA 12205 on 2014 November 7. The flare was accompanied by an
eruption. The results of the analysis show the presence of continuum
enhancements during the evolution of the events, observed both in ROSA images
and in \textit{IRIS} spectra. In the latter, a prominent blue-shifted component
is observed at the onset of the eruption. We investigate the role played by the
evolution of the $\delta$ sunspots of the active region in the flare
triggering, and finally we discuss the changes in the penumbrae surrounding
these sunspots as a further consequence of these flares.
