Don't use `peniko::Color` with `swash_render` #735

Job	Run time
cargo clippy (windows-latest)	2m 16s
cargo clippy (android) (armv7-linux-androideabi)	1m 18s
cargo check (msrv) (android) (armv7-linux-androideabi)	34s
cargo check (msrv) (windows-latest)	2m 50s
cargo clippy (macos-latest)	1m 30s
cargo clippy (android) (aarch64-linux-android)	1m 58s
cargo check (msrv) (android) (aarch64-linux-android)	54s
cargo clippy (ubuntu-latest)	1m 19s
cargo check (msrv) (macos-latest)	1m 2s
cargo clippy (android) (x86_64-linux-android)	2m 5s
cargo check (msrv) (android) (x86_64-linux-android)	57s
cargo check (msrv) (ubuntu-latest)	1m 11s
formatting	24s
cargo doc (windows-latest)	1m 50s
typos	5s
cargo test (windows-latest)	1m 58s
cargo doc (macos-latest)	37s
cargo test (macos-latest)	1m 22s
cargo doc (ubuntu-latest)	27s
cargo test (ubuntu-latest)	49s
	25m 26s

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