chore: unify color mix usage #5138

Job	Run time
Status check > Unit	1s
CI \| Unit	1s
CI \| Visual	1s
Lint styles / run (default)	1m 21s
Lint styles / run (bootstrap)	1m 36s
Lint scripts / run	46s
Lint styles / run (material)	1m 25s
Lint styles / run (classic)	1m 29s
Compile themes / run	46s
Lint styles / run (fluent)	1m 9s
Render test pages / verify	9s
Render test pages / run	2m 23s
Status check > Lint scripts	1s
Status check > Lint styles	1s
Status check > A11y / prepare	1s
Create screenshots / run (default)	1m 42s
Create screenshots / run (bootstrap)	2m 24s
Create screenshots / run (material)	1m 43s
Create screenshots / run (classic)	2m 33s
Create screenshots / run (fluent)	1m 43s
Status check > A11y / run-checks (1)	1m 39s
Status check > A11y / run-checks (2)	2m 23s
Status check > A11y / run-checks (3)	2m 24s
Status check > A11y / run-checks (4)	1m 35s
Detect changes	1s
Status check > Visual	1s
	29m 18s

Provide feedback