<?php

$wp_customize->add_panel(
        'styling',
        array(
                'title' => __( 'Styling', 'blogim' ),
                'description' => __('styling options','blogim'),
                'priority' => 31, 
        )
);
$wp_customize->get_section('background_image')->panel = 'styling';
$wp_customize->get_section('header_image')->panel = 'styling';
$wp_customize->get_section('colors')->panel = 'styling';
$wp_customize->get_setting('background_color')->default = '#FCFFF5';

//Main color

$wp_customize->add_setting(
      'blogim_main_color',
      array(
              'default' => '#193441',
              'capability'     => 'edit_theme_options',
               'sanitize_callback' => 'blogim_sanitize_text',
      )
);
$wp_customize->add_control(
      new WP_Customize_Color_Control(
              $wp_customize,
              'blogim_main_color',
              array(
                      'label'      => __('Main Color','blogim'),
                      'section' => 'colors',
                      'settings' => 'blogim_main_color',
              )
      )
);