feat(react-theme): semi-transparent support

[bsunderhus]

Previous Behavior

New Behavior

Related Issue(s)

• Fixes #

[fabricteam]

📊 Bundle size report

✅ No changes found

[fabricteam]

Perf Analysis (@fluentui/react-components)

No significant results to display.

All results

Scenario	Render type	Master Ticks	PR Ticks	Iterations	Status
Avatar	mount	628	614	5000
Button	mount	292	315	5000
Field	mount	1103	1106	5000
FluentProvider	mount	719	699	5000
FluentProviderWithTheme	mount	68	82	10
FluentProviderWithTheme	virtual-rerender	38	34	10
FluentProviderWithTheme	virtual-rerender-with-unmount	65	68	10
MakeStyles	mount	891	866	50000
Persona	mount	1758	1731	5000
SpinButton	mount	1370	1344	5000
SwatchPicker	mount	1573	1529	5000

[fabricteam]

🕵 fluentuiv9 No visual regressions between this PR and main

[fabricteam]

Perf Analysis (@fluentui/react)

No significant results to display.

All results

Scenario	Render type	Master Ticks	PR Ticks	Iterations	Status
BaseButton	mount	620	613	5000
Breadcrumb	mount	1720	1675	1000
Checkbox	mount	1702	1697	5000
CheckboxBase	mount	1469	1495	5000
ChoiceGroup	mount	2909	2957	5000
ComboBox	mount	689	672	1000
CommandBar	mount	6555	6584	1000
ContextualMenu	mount	13376	13616	1000
DefaultButton	mount	805	795	5000
DetailsRow	mount	2203	2224	5000
DetailsRowFast	mount	2205	2267	5000
DetailsRowNoStyles	mount	2078	2090	5000
Dialog	mount	2807	2708	1000
DocumentCardTitle	mount	243	222	1000
Dropdown	mount	2045	1999	5000
FocusTrapZone	mount	1163	1156	5000
FocusZone	mount	1085	1079	5000
GroupedList	mount	37931	42334	2
GroupedList	virtual-rerender	20345	20334	2
GroupedList	virtual-rerender-with-unmount	51177	51486	2
GroupedListV2	mount	224	240	2
GroupedListV2	virtual-rerender	214	210	2
GroupedListV2	virtual-rerender-with-unmount	229	222	2
IconButton	mount	1122	1154	5000
Label	mount	350	345	5000
Layer	mount	2758	2749	5000
Link	mount	405	394	5000
MenuButton	mount	978	980	5000
MessageBar	mount	21394	21405	5000
Nav	mount	2055	2088	1000
OverflowSet	mount	814	777	5000
Panel	mount	1811	1803	1000
Persona	mount	737	736	1000
Pivot	mount	890	903	1000
PrimaryButton	mount	934	935	5000
Rating	mount	4676	4634	5000
SearchBox	mount	937	911	5000
Shimmer	mount	1877	1931	5000
Slider	mount	1313	1342	5000
SpinButton	mount	2949	2959	5000
Spinner	mount	384	411	5000
SplitButton	mount	1855	1873	5000
Stack	mount	418	434	5000
StackWithIntrinsicChildren	mount	906	918	5000
StackWithTextChildren	mount	2791	2789	5000
SwatchColorPicker	mount	6378	6444	5000
TagPicker	mount	1469	1489	5000
Text	mount	380	378	5000
TextField	mount	954	966	5000
ThemeProvider	mount	847	849	5000
ThemeProvider	virtual-rerender	588	576	5000
ThemeProvider	virtual-rerender-with-unmount	1293	1316	5000
Toggle	mount	598	616	5000
buttonNative	mount	188	189	5000

[layershifter]

Closing for housekeeping 🏡 Feel free to re-open

[bsunderhus]

reopening, although this won't be merged anytime soon, we need the verifications here for now