Why does San Francisco city hall light up in different colors each night?

fook all this bulshyt that the gov't wants u to do like masks, temperature scans, vaccines, social distancing, etc. more people die from heart attacks than ur stupid covid bs lie story

It isn't changed nightly.  

Each color scheme is for a different cause.

Some of the more well known color schemes are:

Rainbow colors for Pride

Red for Valentine's Day

Red and Green for Christmas

Blue and Gold to celebrate the Warriors

Red and Gold to celebrate the forty niners

Orange to celebrate the SF Giants

Pink to mark the women's march

Red and gold to mark Chinese New year

Red, white and blue on President's day & the 4th of July

Purple to celebrate Women's History Month in March

Green, Red and Black to celebrate Black History Month 

Green for St Patrick's Day

You can find a current schedule here:https://sfgov.org/cityhall/lighting

Why not?.................

So-called gay pride. But it has branched out for different groups, note this schedule:

City Hall Holiday Lighting Schedule

This Month’s Lighting Events

4/1 Blue – Honoring Health Care Workers

4/2 Red/White/Blue – Honoring 1st Responders

4/3 Red/Yellow/Red – Flag of Spain

4/4 Green – 150th Anniversary of Golden Gate Park

4/6 Purple – Honoring Hospitality Industry

4/7 Gold – Honoring Front Line Workers

4/8 Blue – Honoring Health Care Workers

4/9 Red/White/Blue – Honoring 1st Responders

4/13 Purple – Honoring Hospitality Industry

4/14 Gold – Honoring Front Line Workers

4/15 Blue – Honoring Health Care Workers

4/16 Red/White/Blue – Honoring 1st Responders

4/17 Blue/Green – Donate Life Week

4/20 Purple – Honoring Hospitality Industry

4/21 Green – Earth Day

4/22 Blue – Honoring Health Care Workers

4/23 Red/White/Blue – Honoring 1st Responders

4/24 Gold – Honoring Front Line Workers

4/27 Blue/White/Red – Netherlands National Day

4/28 Blue/White – Israel National Day

4/29 Blue – Honoring Health Care Workers

4/30 Red/White/Blue – Honoring 1st Responders

5/1 Gold – Honoring Front Line Worker