Inputs with type=color cannot be focused using keyboard tabs. It's obvious why if we check the code: https://github.com/WebKit/WebKit/blob/da12017bead8aa1b692483acae18be32813f8940/Source/WebCore/html/ColorInputType.cpp#L97C4-L105
<rdar://problem/119557550>
Pull request: https://github.com/WebKit/WebKit/pull/21688