How to put 2 different colors on the website title?

Hi there,

you would need to use some PHP to do that, this snippet will do that:

add_filter( 'generate_site_title_output', function( $output ) {
    $titleHTML = 'monconseiller<span class="site-title-accent">fitness</span>';
    return sprintf(
        '<%1$s class="main-title" itemprop="headline">
	<a href="%2$s">%3$s</a>
	</%1$s>',
	( is_front_page() && is_home() ) ? 'h1' : 'p',
	esc_url( apply_filters( 'generate_site_title_href', home_url( '/' ) ) ),
	$titleHTML
    );
});

How to add PHP: https://docs.generatepress.com/article/adding-php/

This will wrap the second word in a span that can then be styled using this CSS:

.main-title .site-title-accent {
    color: #005dbf;
}

How to add CSS: https://docs.generatepress.com/article/adding-css/

Thank you very much David for your answer. It worked really well!

Glad to hear that!