iOS: dialog button color is ignored

[femto-code]

• Framework7 version: 9.0.3
• Platform and Target: Chrome Browser, PWA/WebApp in iOS style mode

Describe the bug

A button color specified for a dialog is applied in MD/Android theme but not for iOS theme.

To Reproduce

Steps to reproduce the behavior:

1. Create a dialog with custom buttons (see sample code and screenshots below)
2. Set a button color
3. See result in iOS theme

Expected behavior

The buttons of the dialog actually show up with the color as defined. It would be nice to have that across themes, including the iOS theme.

Actual Behavior

The buttons of the dialog use the default app theme color shading for all buttons, regardless of button color defined.

Screenshots

Additional context

$f7.dialog.create({
    text: 'This is a test',
    buttons: [
    {
    text: 'Button 1',
    color: 'red',
    },
    {
    text: 'Button 2',
    color: 'blue'
    },
    ],
    verticalButtons: true,
}).open();