How to customize the colors of `biblatex` bibliography entries in `beamer`?

This might be customized using the command

setbeamercolor{<type>}{fg=<color>}. What to substitute in <type> might be

• bibliography item for labels
• bibliography entry author, bibliography entry title, and bibliography entry note for author, title and what follows the title
• math text inlined for URL/DOI

For <color>, substitute color you want

To avoid resetting the inlined math color, set math text inlined locally inside the frame which contains the bibliography since this will affect the entire document (this avoids any changes to inlined math colors)

begin{filecontents*}{sample.bib}
@article{aldaoudeyeh2016,
    title={Photovoltaic-battery scheme to enhance PV array characteristics in partial shading conditions},
    author={Aldaoudeyeh, Al-Motasem},
    journal={IET Renewable Power Generation},
    volume={10},
    number={1},
    pages={108--115},
    year={2016},
    publisher={IET}
}
@INPROCEEDINGS{aldaoudeyeh2017,
    author={A. M. I. Aldaoudeyeh and R. G. Kavasseri and I. T. Lima},
    booktitle={2017 Ninth Annual IEEE Green Technologies Conference (GreenTech)},
    title={Characterization of Forward Electricity Market Price Variations and Price-Responsive Demand},
    year={2017},
    pages={211-218},
    keywords={Adaptation models;Computational modeling;Elasticity;Electricity supply industry;Estimation;Load modeling;Real-time systems;consumption scheduling;electricity markets;peak load;real time pricing;smart metering},
    doi={10.1109/GreenTech.2017.37},
    month=Mar
}
@online{AusgridElasticity2015,
    title = {Ausgrid - Tariff structure statement},
    year = {2015},
    url = {https://www.aer.gov.au/networks-pipelines/determinations-access-arrangements/pricing-proposals-tariffs/ausgrid-tariff-structure-statement-2015},
    urldate = {2016-09-25}
}
@phdthesis{javadi2017phd,
    title={New Implication of Short Circuit Analysis in Assessing Impact of Renewable Energy Resources on System Strength of a Power Grid},
    author={Javadi, Milad},
    year={2017},
    school={University of Oklahoma}
}
@book{eremia2013,
    title={Handbook of Electrical Power System Dynamics: Modeling, Stability, and Control},
    author={Eremia, Mircea and Shahidehpour, Mohammad},
    volume={92},
    year={2013},
    publisher={John Wiley & Sons}
}
end{filecontents*}



documentclass[aspectratio=169, xcolor={x11names}, t]{beamer}

usecolortheme{seahorse}
useoutertheme{miniframes}
useinnertheme{circles}

usepackage[style=alphabetic, sorting=ydnt]{biblatex}
addbibresource{sample.bib}

setbeamertemplate{bibliography item}{insertbiblabel}


begin{document}
    
begin{frame}[allowframebreaks=0.9]{References}
    
    % Customize colors
        
        % Label
        setbeamercolor{bibliography item}{fg=SlateBlue2}
        
        % Author, title, note
        setbeamercolor{bibliography entry author}{fg=SlateBlue2}
        setbeamercolor{bibliography entry title}{fg=black}
        setbeamercolor{bibliography entry note}{fg=black}
        
        % URL/DOI
        setbeamercolor{math text inlined}{fg=DodgerBlue3}
    
    nocite{*}
    
    printbibliography

end{frame}

end{document}