how to add new theme to beamer in latex code example

Example: themes in beamer latex

\documentclass{beamer}
\usetheme{<name-of-the-theme>}
\usecolortheme{<color>}
%List of themes:
AnnArbor, Antibes, Bergen, Berkeley, Berlin, Boadilla, boxes,
CambridgeUS, Copenhagen, Darmstadt, default, Dresden, Frankfurt,
Goettingen, Hannover, Ilmenau, JuanLesPins, Luebeck, Madrid, Malmoe

%List of colors:
albatross, beaver, beetle, crane, default, dolphin, dove, fly, lily,
orchid, rose, seagull, seahorse, sidebartab, structure, whale, wolverine