P1B: Refactor (packages/ui/src/theme/color.ts:120): Complex binary expression

### Uniqueness check

- [x] I have searched open issues and confirmed this **file + smell** is not already taken.

### Full path to the Typescript file

packages/ui/src/theme/color.ts

### Function(s)/scope targeted

fit0klch

### Relevant Qlty output

```shell
packages/ui/src/theme/color.ts
 111  Complex binary expression
 120  Complex binary expression
```