Transform select-type exposed filters into jump menus.

CUSTOMMODULE.module.php

<?php
// Rename this file to `CUSTOMMODULE.module`

/**
 * Implements hook_form_FORM_ID_alter().
 */
function CUSTOMMODULE_form_views_exposed_form_alter(&$form, &$form_state, $form_id) {
  // Replace `Size` filter.
  CUSTOMMODULE_jumpmenu($form, 'field_size_tid');

  // Replace `Color` filter.
  CUSTOMMODULE_jumpmenu($form, 'field_color_tid');

  // Non-existing filter.
  CUSTOMMODULE_jumpmenu($form, 'field_doesnt_exist');
}

/**
 * Transform select filters into a simple jump menu.
 *
 * @param $form
 *   Nested array of form elements that comprise the form.
 * @param $field_name
 *   String representing the name of the field to be replaced.
 */
function CUSTOMMODULE_jumpmenu(&$form, $field_name) {
  if (
    isset($form[$field_name])
    && ($form[$field_name]['#type'] === 'select')
    && !empty($form[$field_name]['#options'])
  ) {
    $options = &$form[$field_name]['#options'];
    foreach ($options as $tid => $value) {
      if (is_int($tid)) {
        $path = drupal_get_path_alias('taxonomy/term/' . $tid);
        $options[url($path)] = $value;
        unset($options[$tid]);
      }
    }

    $form[$field_name]['#attributes']['onChange'] = 'javascript:if (this.value !== "All") { location.href = this.value; return false; }';

    return $form;
  }

  return [];
}

CUSTOMMODULE.views_default.inc.php

<?php
// Rename this file to `CUSTOMMODULE.views_default.inc`

/**
 * Implements hook_views_default_views().
 */
function CUSTOMMODULE_views_default_views() {
  $views = array();

  $view = new view();
  $view->name = 'example_view';
  $view->description = '';
  $view->tag = 'default';
  $view->base_table = 'node';
  $view->human_name = 'Example view';
  $view->core = 7;
  $view->api_version = '3.0';
  $view->disabled = FALSE; /* Edit this to true to make a default view disabled initially */

  /* Display: Master */
  $handler = $view->new_display('default', 'Master', 'default');
  $handler->display->display_options['title'] = 'Example view';
  $handler->display->display_options['use_more_always'] = FALSE;
  $handler->display->display_options['access']['type'] = 'perm';
  $handler->display->display_options['cache']['type'] = 'none';
  $handler->display->display_options['query']['type'] = 'views_query';
  $handler->display->display_options['exposed_form']['type'] = 'basic';
  $handler->display->display_options['pager']['type'] = 'full';
  $handler->display->display_options['pager']['options']['items_per_page'] = '50';
  $handler->display->display_options['style_plugin'] = 'table';
  $handler->display->display_options['style_options']['columns'] = array(
    'title' => 'title',
    'field_color' => 'field_color',
    'field_size' => 'field_size',
  );
  $handler->display->display_options['style_options']['default'] = '-1';
  $handler->display->display_options['style_options']['info'] = array(
    'title' => array(
      'sortable' => 0,
      'default_sort_order' => 'asc',
      'align' => '',
      'separator' => '',
      'empty_column' => 0,
    ),
    'field_color' => array(
      'sortable' => 0,
      'default_sort_order' => 'asc',
      'align' => '',
      'separator' => '',
      'empty_column' => 0,
    ),
    'field_size' => array(
      'sortable' => 0,
      'default_sort_order' => 'asc',
      'align' => '',
      'separator' => '',
      'empty_column' => 0,
    ),
  );
  /* Field: Content: Title */
  $handler->display->display_options['fields']['title']['id'] = 'title';
  $handler->display->display_options['fields']['title']['table'] = 'node';
  $handler->display->display_options['fields']['title']['field'] = 'title';
  $handler->display->display_options['fields']['title']['alter']['word_boundary'] = FALSE;
  $handler->display->display_options['fields']['title']['alter']['ellipsis'] = FALSE;
  /* Field: Content: Color */
  $handler->display->display_options['fields']['field_color']['id'] = 'field_color';
  $handler->display->display_options['fields']['field_color']['table'] = 'field_data_field_color';
  $handler->display->display_options['fields']['field_color']['field'] = 'field_color';
  /* Field: Content: Size */
  $handler->display->display_options['fields']['field_size']['id'] = 'field_size';
  $handler->display->display_options['fields']['field_size']['table'] = 'field_data_field_size';
  $handler->display->display_options['fields']['field_size']['field'] = 'field_size';
  /* Sort criterion: Content: Title */
  $handler->display->display_options['sorts']['title']['id'] = 'title';
  $handler->display->display_options['sorts']['title']['table'] = 'node';
  $handler->display->display_options['sorts']['title']['field'] = 'title';
  /* Filter criterion: Content: Published */
  $handler->display->display_options['filters']['status']['id'] = 'status';
  $handler->display->display_options['filters']['status']['table'] = 'node';
  $handler->display->display_options['filters']['status']['field'] = 'status';
  $handler->display->display_options['filters']['status']['value'] = 1;
  $handler->display->display_options['filters']['status']['group'] = 1;
  $handler->display->display_options['filters']['status']['expose']['operator'] = FALSE;
  /* Filter criterion: Content: Type */
  $handler->display->display_options['filters']['type']['id'] = 'type';
  $handler->display->display_options['filters']['type']['table'] = 'node';
  $handler->display->display_options['filters']['type']['field'] = 'type';
  $handler->display->display_options['filters']['type']['value'] = array(
    'tshirt' => 'tshirt',
  );
  /* Filter criterion: Content: Size (field_size) */
  $handler->display->display_options['filters']['field_size_tid']['id'] = 'field_size_tid';
  $handler->display->display_options['filters']['field_size_tid']['table'] = 'field_data_field_size';
  $handler->display->display_options['filters']['field_size_tid']['field'] = 'field_size_tid';
  $handler->display->display_options['filters']['field_size_tid']['exposed'] = TRUE;
  $handler->display->display_options['filters']['field_size_tid']['expose']['operator_id'] = 'field_size_tid_op';
  $handler->display->display_options['filters']['field_size_tid']['expose']['label'] = 'Size';
  $handler->display->display_options['filters']['field_size_tid']['expose']['operator'] = 'field_size_tid_op';
  $handler->display->display_options['filters']['field_size_tid']['expose']['identifier'] = 'field_size_tid';
  $handler->display->display_options['filters']['field_size_tid']['expose']['remember_roles'] = array(
    2 => '2',
    1 => 0,
    3 => 0,
  );
  $handler->display->display_options['filters']['field_size_tid']['type'] = 'select';
  $handler->display->display_options['filters']['field_size_tid']['vocabulary'] = 'size';
  /* Filter criterion: Content: Color (field_color) */
  $handler->display->display_options['filters']['field_color_tid']['id'] = 'field_color_tid';
  $handler->display->display_options['filters']['field_color_tid']['table'] = 'field_data_field_color';
  $handler->display->display_options['filters']['field_color_tid']['field'] = 'field_color_tid';
  $handler->display->display_options['filters']['field_color_tid']['exposed'] = TRUE;
  $handler->display->display_options['filters']['field_color_tid']['expose']['operator_id'] = 'field_color_tid_op';
  $handler->display->display_options['filters']['field_color_tid']['expose']['label'] = 'Color';
  $handler->display->display_options['filters']['field_color_tid']['expose']['operator'] = 'field_color_tid_op';
  $handler->display->display_options['filters']['field_color_tid']['expose']['identifier'] = 'field_color_tid';
  $handler->display->display_options['filters']['field_color_tid']['expose']['remember_roles'] = array(
    2 => '2',
    1 => 0,
    3 => 0,
  );
  $handler->display->display_options['filters']['field_color_tid']['type'] = 'select';
  $handler->display->display_options['filters']['field_color_tid']['vocabulary'] = 'color';

  /* Display: Page */
  $handler = $view->new_display('page', 'Page', 'page');
  $handler->display->display_options['path'] = 'example-view';
  $handler->display->display_options['menu']['type'] = 'normal';
  $handler->display->display_options['menu']['title'] = 'Example view';
  $handler->display->display_options['menu']['name'] = 'main-menu';
  $views['example_view'] = $view;

  return $views;
}