Turning off dark mode in Nuxt 3.16 with Nuxt 4 compatibility mode + Nuxt ui 3

I'm trying to force the light mode to Nuxt UI 3 in a Nuxt 4 compatible project (3.16).

I put this in my nuxt.config.ts:

colorMode: {
  preference: 'light',
},

colorMode: {
  preference: 'light',
},

colorMode: {
  preference: 'light',
},

colorMode: {
  preference: 'light',
},

But it doesn't work. All my Nuxt ui 3 elements stay in dark mode (system choice).

How cn I force the light mode from a Nuxt 4 compatible set up?