Created attachment 416797 [details] Patch
I accidentally left all the fallback color converter functions return SRGBA, which is not correct. They are not used yet, so this is not observable, but will be used soon so needs to be fixed.
Committed r271095: <https://trac.webkit.org/changeset/271095> All reviewed patches have been landed. Closing bug and clearing flags on attachment 416797 [details].
<rdar://problem/72690877>