`UInput` Floating label background issue in some theme presets

Environment

Can be checked in the website itself - https://ui.nuxt.com/docs/components/input#with-floating-label

Is this bug related to Nuxt or Vue?

Nuxt

Package

v4.x

Version

v4.11.1

Reproduction

• Go to https://ui.nuxt.com/docs/components/input#with-floating-label
• Change the theme preset from Default to Mono
• Floating label and the input has different backgrounds
• Same case in these themes - Mono, Sky, Mint, Iris, Crimson

Description

Issue: The background of the floating label is different than the input background for some of the presents as mentioned in the reproduction above.

Potential fix: Set initial background as transparent, and focus background as default.

<UInput v-model="value" placeholder="" :ui="{ base: 'peer' }">
    <label class="...">
        <span class="inline-flex px-1 bg-transparent peer-focus:bg-default transition-all">Email address</span>
    </label>
</UInput>

Additional context

No response

Logs

Start with the UInput floating-label example at the linked documentation page and inspect the styling for the Default, Mono, Sky, Mint, Iris, and Crimson presets. Reproduce the mismatch, then verify that the label and input backgrounds match in each named preset and that the focused state remains correct.