can't save taxonomy colors

Hi,

On my site, i can't save colors for taxonomy terms on taxonomy's page.

When i'm going on admin/config/user-interface/colors/taxonomy, i can pick a taxonomy term, change the color with the color picker or directly with the code of the color. It works.
But when i click on the save button, the page is refreshed but nothing is saved (the colors table in database doesn't have any entry).

The modules save colors on nodes and users pages, but not on taxonomy's page.

I'm on Drupal 7.39.

I have searched in code, adding some messages, and the function "colors_admin_type_settings_submit" in colors.admin.inc is not launched on taxonomy's page... it's launched on nodes page...

Any idea ? Thanks...

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Problem solved.
There were to many tags, so to many fields in the post request.
PHP limits the number of fields in post requests.

in php.ini, a had to include

max_input_vars = 5000
suhosin.request.max_vars = 5000
suhosin.post.max_vars = 5000

to increase the number of fields in the post... and it works.