dark-mode: Make "error" alerts compatible.
dark-mode: Make "error" alerts compatible.

This makes them compatible by making the backgrounds darker and the text base color.

rishig/zulip,timabbott/zulip,kou/zulip,dhcrzf/zulip,punchagan/zulip,brainwane/zulip,dhcrzf/zulip,hackerkid/zulip,showell/zulip,brainwane/zulip,tommyip/zulip,eeshangarg/zulip,hackerkid/zulip,jackrzhang/zulip,jackrzhang/zulip,andersk/zulip,andersk/zulip,shubhamdhama/zulip,shubhamdhama/zulip,rishig/zulip,eeshangarg/zulip,rht/zulip,kou/zulip,timabbott/zulip,timabbott/zulip,rht/zulip,rht/zulip,timabbott/zulip,hackerkid/zulip,punchagan/zulip,showell/zulip,synicalsyntax/zulip,jackrzhang/zulip,hackerkid/zulip,zulip/zulip,andersk/zulip,rishig/zulip,shubhamdhama/zulip,tommyip/zulip,showell/zulip,eeshangarg/zulip,kou/zulip,kou/zulip,jackrzhang/zulip,shubhamdhama/zulip,synicalsyntax/zulip,eeshangarg/zulip,jackrzhang/zulip,zulip/zulip,brainwane/zulip,showell/zulip,brainwane/zulip,brainwane/zulip,showell/zulip,timabbott/zulip,synicalsyntax/zulip,dhcrzf/zulip,showell/zulip,rishig/zulip,jackrzhang/zulip,shubhamdhama/zulip,andersk/zulip,synicalsyntax/zulip,jackrzhang/zulip,brainwane/zulip,andersk/zulip,hackerkid/zulip,zulip/zulip,brainwane/zulip,punchagan/zulip,tommyip/zulip,rht/zulip,hackerkid/zulip,dhcrzf/zulip,rht/zulip,andersk/zulip,synicalsyntax/zulip,punchagan/zulip,eeshangarg/zulip,hackerkid/zulip,rishig/zulip,tommyip/zulip,zulip/zulip,punchagan/zulip,dhcrzf/zulip,andersk/zulip,kou/zulip,kou/zulip,zulip/zulip,synicalsyntax/zulip,shubhamdhama/zulip,kou/zulip,punchagan/zulip,synicalsyntax/zulip,punchagan/zulip,tommyip/zulip,eeshangarg/zulip,rht/zulip,rishig/zulip,shubhamdhama/zulip,tommyip/zulip,timabbott/zulip,dhcrzf/zulip,zulip/zulip,rishig/zulip,timabbott/zulip,eeshangarg/zulip,showell/zulip,zulip/zulip,rht/zulip,tommyip/zulip,dhcrzf/zulip