PHP notice when saving theme's configuration changes

Environment Details

PHP - 5.2.3
Apache - 2.2.3
Drupal - drupal-6.x-dev
OS - Linux (Fedora Core 6)

Steps to reproduce
1 - vanilla drupal-6.x-dev install

2 - Admin themes main page http://www.testsite9.com/admin/build/themes
(Only Garland is enabled and is the default one)

3 - Click on link to configure Garland - http://www.testsite9.com/admin/build/themes/settings/garland

4 - Don't make any changes at all and click on "Save Configuration" button

it gives the following notice -
notice: Undefined variable: file in /work/projects/testsites/drupal/6.x/testsite9/www/modules/color/color.module on line 224.

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Repeat steps 1, 2, 3

4 - In the "Toggle Display" section unselect all checkboxes

5 - click on "Save Configuration" button
it gives the following notices

* notice: Undefined offset: 0 in /work/projects/testsites/drupal/6.x/testsite9/www/themes/garland/page.tpl.php on line 33.
* notice: Undefined variable: file in /work/projects/testsites/drupal/6.x/testsite9/www/modules/color/color.module on line 224.

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Repeat steps 1, 2, 3

4 - in the "Toggle display" section (currently none of the checkboxes are selected) check the Logo checkbox (first one)
5 - click on "Save Configuration" button
it gives the following notices
* notice: Undefined offset: 0 in /work/projects/testsites/drupal/6.x/testsite9/www/themes/garland/page.tpl.php on line 33.
* notice: Undefined variable: file in /work/projects/testsites/drupal/6.x/testsite9/www/modules/color/color.module on line 224.

As it can be seen there are bugs in the 2 files themes/garland/page.tpl.php and modules/color/color.module

yashesh bhatia