Add extra themes #553

Job	Run time
Clippy	2m 34s
Code Coverage	12s
Rustfmt	14s
Build Wasm Examples (basic)	58s
Build Book	1m 34s
Tests (windows-latest)	4m 53s
semver	45s
Build Wasm Examples (callback-example)	53s
Build Examples (customization)	28s
Build Examples (3d_charts)	34s
Build Examples (basic_charts)	30s
Tests (macos-latest)	2m 38s
Build Examples (kaleido)	1m 15s
Build Examples (subplots)	27s
Tests (ubuntu-latest)	1m 41s
Build Examples (shapes)	25s
Build Examples (custom_controls)	25s
Build Examples (images)	39s
Build Examples (financial_charts)	24s
Build Examples (maps)	41s
Build Examples (themes)	25s
Build Examples (ndarray)	26s
Build Examples (scientific_charts)	23s
	23m 24s

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