Because Virtual DJ's official Plugins and Addons catalog often avoids skins that mimic competing software for legal reasons, these skins are typically hosted on third-party sites:
If you find a safe skin (ZIP file):
Don't let the name "Lite" fool you. This skin is optimized for Virtual DJ 2023’s new audio engine. It features the large, central waveform stack found in Serato’s "Library Mode." Serato Dj Pro Skin For Virtual Dj 2023 Free Download